53103
2018
2018
eng
8
612
article
EDP Sciences
Les Ulis
HESS Collaboratio MAGIC Collaboration
1
2018-04-09
2018-04-09
--
Constraints on particle acceleration in SS433/W50 from MAGIC and HESS observations
Context. The large jet kinetic power and non-thermal processes occurring in the microquasar SS 433 make this source a good candidate for a very high-energy (VHE) gamma-ray emitter. Gamma-ray fluxes above the sensitivity limits of current Cherenkov telescopes have been predicted for both the central X-ray binary system and the interaction regions of SS 433 jets with the surrounding W50 nebula. Non-thermal emission at lower energies has been previously reported, indicating that efficient particle acceleration is taking place in the system. Aims. We explore the capability of SS 433 to emit VHE gamma rays during periods in which the expected flux attenuation due to periodic eclipses (P-orb similar to 13.1 days) and precession of the circumstellar disk (P-pre similar to 162 days) periodically covering the central binary system is expected to be at its minimum. The eastern and western SS 433/W50 interaction regions are also examined using the whole data set available. We aim to constrain some theoretical models previously developed for this system with our observations. Methods. We made use of dedicated observations from the Major Atmospheric Gamma Imaging Cherenkov telescopes (MAGIC) and High Energy Spectroscopic System (H.E.S.S.) of SS 433 taken from 2006 to 2011. These observation were combined for the first time and accounted for a total effective observation time of 16.5 h, which were scheduled considering the expected phases of minimum absorption of the putative VHE emission. Gamma-ray attenuation does not affect the jet/medium interaction regions. In this case, the analysis of a larger data set amounting to similar to 40-80 h, depending on the region, was employed. Results. No evidence of VHE gamma-ray emission either from the central binary system or from the eastern/western interaction regions was found. Upper limits were computed for the combined data set. Differential fluxes from the central system are found to be less than or similar to 10(-12)-10(-13) TeV-1 cm(-2) s(-1) in an energy interval ranging from similar to few x 100 GeV to similar to few TeV. Integral flux limits down to similar to 10(-12)-10(-13) ph cm(-2) s(-1) and similar to 10(-13)-10(-14) ph cm(-2) s(-1) are obtained at 300 and 800 GeV, respectively. Our results are used to place constraints on the particle acceleration fraction at the inner jet regions and on the physics of the jet/medium interactions. Conclusions. Our findings suggest that the fraction of the jet kinetic power that is transferred to relativistic protons must be relatively small in SS 433, q(p) <= 2.5 x 10(-5), to explain the lack of TeV and neutrino emission from the central system. At the SS 433/W50 interface, the presence of magnetic fields greater than or similar to 10 mu G is derived assuming a synchrotron origin for the observed X-ray emission. This also implies the presence of high-energy electrons with E-e up to 50 TeV, preventing an efficient production of gamma-ray fluxes in these interaction regions.
Astronomy and astrophysics : an international weekly journal
10.1051/0004-6361/201731169
1432-0746
wos:2018
A14
WOS:000429404700014
Ahnen, ML (reprint author), Swiss Fed Inst Technol, CH-8093 Zurich, Switzerland.
German B.M.B.F.Federal Ministry of Education & Research (BMBF); German M.P.G.; Italian INFNIstituto Nazionale di Fisica Nucleare; Italian INAFIstituto Nazionale Astrofisica; Swiss National Fund SNFSwiss National Science Foundation (SNSF); ERDF under the Spanish MINECO [FPA2015-69818-P, FPA2012-36668, FPA2015-68378-P, FPA2015-69210-C6-2-R, FPA2015-69210-C6-4-R, FPA2015-69210C6-6-R, AYA2015-71042-P, AYA2016-76012-C3-1-P, ESP2015-71662-C2-2-P, CSD2009-00064]; Japanese JSPSMinistry of Education, Culture, Sports, Science and Technology, Japan (MEXT)Japan Society for the Promotion of Science; Japanese MEXTMinistry of Education, Culture, Sports, Science and Technology, Japan (MEXT); Spanish Centro de Excelencia "Severo Ochoa" [SEV-2012-0234, SEV-2015-0548]; Unidad de Excelencia "Maria de Maeztu" [MDM-2014-0369]; Croatian Science Foundation (HrZZ) Project [09/176]; University of Rijeka Project [13.12.1.3.02]; DFG Collaborative Research CentersGerman Research Foundation (DFG) [SFB823/C4, SFB876/C3]; Polish MNiSzW grant [745/N-HESS-MAGIC/2010/0]; German Ministry for Education and Research (BMBF)Federal Ministry of Education & Research (BMBF); Max Planck SocietyMax Planck SocietyFoundation CELLEX; German Research Foundation (DFG)German Research Foundation (DFG); French Ministry for ResearchMinistry of Research, France; CNRS-IN2P3Centre National de la Recherche Scientifique (CNRS); Astroparticle Interdisciplinary Programme of the CNRS; UK Science and Technology Facilities Council (STFC)Science & Technology Facilities Council (STFC); IPNP of the Charles University; Czech Science FoundationGrant Agency of the Czech Republic; Polish Ministry of Science and Higher EducationMinistry of Science and Higher Education, Poland; South African Department of Science and Technology; National Research Foundation; University of Namibia
2021-12-13T12:24:29+00:00
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M. L. Ahnen
S. Ansoldi
L. A. Antonelli
C. Arcaro
A. Babie
B. Banerjee
P. Bangale
U. Barres de Almeida
J. A. Barrio
J. Becerra Gonzalez
W. Bednarek
E. Bernardini
A. Berti
B. Biasuzzi
A. Biland
O. Blanch
S. Bonnefoy
G. Bonnoli
F. Borracci
R. Carosi
A. Carosi
A. Chatterjee
P. Colin
E. Colombo
J. L. Contreras
J. Cortina
S. Covino
P. Cumani
P. Da Vela
F. Dazzi
A. De Angelis
B. De Lotto
E. de Ona Wilhelmi
F. Di Pierro
M. Doert
A. Dominguez
D. Dominis Prester
D. Dorner
M. Doro
S. Einecke
D. Eisenacher Glawion
D. Elsaesser
M. Engelkemeier
V. Fallah Ramazani
A. Fernandez-Barra
D. Fidalgo
M. V. Fonseca
L. Font
C. Fruck
D. Galindo
R. J. Garcia Lopez
M. Garczarczyk
M. Gaug
P. Giammaria
N. Godinovie
D. Gora
S. Griffiths
D. Guberman
D. Hadasch
A. Hahn
T. Hassan
M. Hayashida
J. Herrera
J. Hose
D. Hrupec
G. Hughes
K. Ishio
Y. Konno
H. Kubo
J. Kushida
D. Kuvezdie
D. Lelas
E. Lindfors
S. Lombardi
F. Longo
M. Lopez
A. Lopez-Oramas
P. Majumdar
M. Makariev
G. Maneva
M. Manganaro
K. Mannheim
L. Maraschi
M. Mariotti
M. Martinez
D. Mazin
U. Menzel
M. Minev
R. Mirzoyan
A. Moralejo
V. Moreno
E. Moretti
P. Munar-Adrover
V. Neustroev
A. Niedzwiecki
M. Nievas Rosillo
K. Nilsson
K. Nishijima
K. Noda
L. Nogues
S. Paiano
J. Palacio
D. Paneque
R. Paoletti
J. M. Paredes
X. Paredes-Fortuny
G. Pedaletti
M. Peresano
L. Perri
M. Persic
P. G. Prada Moroni
E. Prandini
I. Puljak
J. R. Garcia
I. Reichardt
W. Rhode
M. Riti
J. Rico
T. Saito
K. Satalecka
S. Schroeder
T. Schweizer
S. N. Shore
A. Sillanpaa
J. Sitarek
D. Sobczynskall
A. Stamerra
M. Strzys
T. Surie
L. Takalo
F. Tavecchio
P. Temnikov
T. Terzie
D. Tescaro
M. Teshima
D. F. Torres
N. Torres-Alla
A. Treves
G. Vanzo
M. Vazquez Acosta
I. Vovk
J. E. Ward
M. Will
M. H. Wu
D. Zarie
Hassan E. Abdalla
A. Abramowski
Felix A. Aharonian
F. Ait Benkhali
A. G. Akhperjanian
T. Andersson
Ekrem Oǧuzhan Angüner
M. Arakawa
M. Arrieta
P. Aubert
M. Backes
A. Balzer
M. Barnard
Y. Becherini
J. Becker Tjus
D. Berge
S. Bernhard
K. Bernlohr
R. Blackwell
M. Bottcher
C. Boisson
J. Bolmont
Pol Bordas
J. Bregeon
F. Brun
P. Brun
M. Bryan
M. Btichele
T. Bulik
M. Capasso
J. Carr
Sabrina Casanova
M. Cerruti
N. Chakraborty
R. Chalme-Calvet
R. C. G. Chaves
A. Chen
J. Chevalier
M. Chretien
M. Coffaro
S. Colafrancesco
G. Cologna
B. Condon
J. Conrad
Y. Cui
I. D. Davids
J. Decock
B. Degrange
C. Dei
J. Devin
P. Dewilt
L. Dirson
A. Djannati-Atai
W. Domainko
A. Donath
K. Dutson
J. Dyks
T. Edwards
Kathrin Egberts
P. Eger
J. -P. Ernenwein
S. Eschbach
C. Farnier
S. Fegan
M. V. Fernandes
A. Fiasson
G. Fontaine
A. Forster
S. Funk
M. Ftifiling
S. Gabici
M. Gajdus
Y. A. Gallant
T. Garrigoux
G. Giavitto
B. Giebels
J. F. Glicenstein
D. Gottschal
A. Goya
M. -H. Grondin
J. Hahn
M. Haupt
J. Hawkes
G. Heinzelmann
G. Henri
G. Hermann
O. Hervet
J. A. Hinton
W. Hofmann
Clemens Hoischen
M. Holler
D. Horns
A. Ivascenko
H. Iwasaki
A. Jacholkowska
M. Jamrozy
M. Janiak
D. Jankowsky
F. Jankowsky
M. Jingo
T. Jogler
L. Jouvin
I. Jung-Richardt
M. A. Kastendieck
K. Katarzyfiski
M. Katsuragawa
U. Katz
D. Kerszberg
D. Khangulyan
B. Khelifi
M. Kieffer
J. King
S. Klepser
D. Klochkov
W. Kluiniak
D. Kolitzus
Nu. Komin
K. Kosack
S. Krakau
M. Kraus
P. P. Krtiger
H. Laffon
G. Lamanna
J. Lau
J. -P. Lees
J. Lefaucheur
V. Lefranc
A. Lemiere
M. Lemoine-Goumard
J. -P. Lenain
Eva Leser
T. Lohse
M. Lorentz
R. Liu
R. Lopez-Coto
I. Lypova
V. Marandon
A. Marcowith
C. Mariaud
R. Marx
G. Maurin
N. Maxted
M. Mayer
P. J. Meintjes
M. Meyer
A. M. W. Mitche
R. Moderski
M. Mohamed
L. Mohrmann
K. Mora
E. Moulin
T. Murach
S. Nakashima
M. De Naurois
F. Niederwanger
J. Niemiec
L. Oakes
H. Odaka
S. Ott
S. Ohm
M. Ostrowski
I. Oya
M. Padovani
M. Panter
R. D. Parsons
N. W. Pekeur
G. Pelletier
C. Perennes
P. -O. Petrucci
B. Peyaud
Q. Pie
S. Pita
H. Poon
D. Prokhorov
H. Prokoph
G. Ptffilhofer
M. Punch
A. Quirrenbach
S. Raab
A. Reimer
O. Reimer
M. Renaud
R. De Los Reyes
S. Richter
F. Rieger
C. Romoli
G. Rowell
B. Rudak
C. B. Rulten
S. Safi-Harb
V. Sahakian
S. Saito
D. Salek
D. A. Sanchez
A. Santangelo
M. Sasaki
R. Schlickeiser
F. Schtissler
A. Schulz
U. Schwanke
S. Schwemmer
M. Seglar-Arroyo
M. Settimo
A. S. Seyffert
N. Shafi
I. Shilon
R. Simoni
H. So
F. Spanier
G. Spengler
F. Spies
L. Stawarz
R. Steenkamp
Christian Stegmann
K. Stycz
I. Sushch
T. Takahashi
J. -P. Tavernet
T. Tavernier
A. M. Taylor
R. Terrier
L. Tibaldo
D. Tiziani
M. Tluczykont
C. Trichard
N. Tsuji
R. Tuffs
Y. Uchiyama
D. J. Van der Walt
C. Van Eldik
C. Van Rensburg
B. Van Soelen
G. Vasileiadis
J. Veh
C. Venter
A. Viana
P. Vincent
J. Vink
F. Voisin
H. J. Vok
T. Vuillaume
Z. Wadiasingh
S. J. Wagner
P. Wagner
R. M. Wagner
R. White
A. Wierzcholska
P. Willmann
A. Wornlein
D. Wouters
R. Yang
V. Zabalza
D. Zaborov
M. Zacharias
R. Zanin
A. A. Zdziarski
Alraune Zech
F. Zefi
A. Ziegler
N. Zywuckan
eng
uncontrolled
gamma rays: general
eng
uncontrolled
stars: black holes
eng
uncontrolled
X-rays: binaries
eng
uncontrolled
ISM: jets and outflows
Astronomie und zugeordnete Wissenschaften
Institut für Physik und Astronomie
Referiert
Import
Bronze Open-Access
36450
2011
2011
eng
193
316
124
3
32
article
Springer
Dordrecht
CTA Consortium
1
--
--
--
Design concepts for the Cherenkov Telescope Array CTA an advanced facility for ground-based high-energy gamma-ray astronomy
Ground-based gamma-ray astronomy has had a major breakthrough with the impressive results obtained using systems of imaging atmospheric Cherenkov telescopes. Ground-based gamma-ray astronomy has a huge potential in astrophysics, particle physics and cosmology. CTA is an international initiative to build the next generation instrument, with a factor of 5-10 improvement in sensitivity in the 100 GeV-10 TeV range and the extension to energies well below 100 GeV and above 100 TeV. CTA will consist of two arrays (one in the north, one in the south) for full sky coverage and will be operated as open observatory. The design of CTA is based on currently available technology. This document reports on the status and presents the major design concepts of CTA.
Experimental astronomy : an international journal on astronomical instrumentation and data analysis
10.1007/s10686-011-9247-0
0922-6435
1572-9508
wos:2011-2013
WOS:000300769700001
Hofmann, W (reprint author), Heidelberg Univ, CTA Project Off, D-69117 Heidelberg, Germany., Werner.Hofmann@mpi-hd.mpg.de; martinez@ifae.es
Ministerio de Ciencia, Tecnologia e Innovacion Productiva (MinCyT);
Comision Nacional de Energia Atomica (CNEA); Consejo Nacional de
Investigaciones Cientificas y Tecnicas (CONICET) Argentina; State
Committee of Science of Armenia; Ministry for Research, France;
CNRS-INSU, France; CNRS-IN2P3, France; CEA, France; Max Planck Society,
Germany; BMBF, Germany; DESY, Germany; Helmholtz Association, Germany;
MIUR, Italy; Netherlands Research School for Astronomy (NOVA);
Netherlands Organization for Scientific Research (NWO); Ministry of
Science and Higher Education, Poland; National Centre for Research and
Development, Poland; MICINN; CPAN, Spain; MultiDark Consolider-Ingenio
programme, Spain; Swedish Research Council, Sweden; Royal Swedish
Academy of Sciences, Sweden; Swiss National Science Foundation (SNSF),
Switzerland; Leverhulme Trust, UK; Royal Society, UK; Science and
Technologies Facilities Council, UK; Durham University, UK; National
Science Foundation; Department of Energy; Argonne National Laboratory;
University of California; University of Chicago; Iowa State University;
Institute for Nuclear and Particle Astrophysics (INPAC-MRPI); Washington
University McDonnell Center for the Space Sciences, USA
M. Actis
G. Agnetta
Felix A. Aharonian
A. G. Akhperjanian
J. Aleksic
E. Aliu
D. Allan
I. Allekotte
F. Antico
L. A. Antonelli
P. Antoranz
A. Aravantinos
T. Arlen
H. Arnaldi
S. Artmann
K. Asano
H. G. Asorey
J. Baehr
A. Bais
C. Baixeras
S. Bajtlik
D. Balis
A. Bamba
C. Barbier
M. Barcelo
Anna Barnacka
Jürgen Barnstedt
U. Barres de Almeida
J. A. Barrio
S. Basso
D. Bastieri
C. Bauer
J. Becerra Gonzalez
Yvonne Becherini
K. C. Bechtol
J. Becker
Volker Beckmann
W. Bednarek
B. Behera
M. Beilicke
M. Belluso
M. Benallou
W. Benbow
J. Berdugo
K. Berger
T. Bernardino
K. Bernlöhr
A. Biland
S. Billotta
T. Bird
E. Birsin
E. Bissaldi
S. Blake
O. Blanch Bigas
A. A. Bobkov
L. Bogacz
M. Bogdan
Catherine Boisson
J. Boix Gargallo
J. Bolmont
G. Bonanno
A. Bonardi
T. Bonev
Janett Borkowski
O. Botner
A. Bottani
M. Bourgeat
C. Boutonnet
A. Bouvier
S. Brau-Nogue
I. Braun
T. Bretz
M. S. Briggs
Pierre Brun
L. Brunetti
H. Buckley
V. Bugaev
R. Buehler
Tomasz Bulik
G. Busetto
S. Buson
K. Byrum
M. Cailles
R. A. Cameron
R. Canestrari
S. Cantu
E. Carmona
A. Carosi
John Carr
P. H. Carton
M. Casiraghi
H. Castarede
O. Catalano
S. Cavazzani
S. Cazaux
B. Cerruti
M. Cerruti
M. Chadwick
J. Chiang
M. Chikawa
M. Cieslar
M. Ciesielska
A. N. Cillis
C. Clerc
P. Colin
J. Colome
M. Compin
P. Conconi
V. Connaughton
Jan Conrad
J. L. Contreras
P. Coppi
M. Corlier
P. Corona
O. Corpace
D. Corti
J. Cortina
H. Costantini
G. Cotter
B. Courty
S. Couturier
S. Covino
J. Croston
G. Cusumano
M. K. Daniel
F. Dazzi
A. Deangelis
E. de Cea del Pozo
E. M. de Gouveia Dal Pino
O. de Jager
I. de la Calle Perez
G. De La Vega
B. De Lotto
M. de Naurois
E. de Ona Wilhelmi
V. de Souza
B. Decerprit
C. Deil
E. Delagnes
G. Deleglise
C. Delgado
T. Dettlaff
A. Di Paolo
F. Di Pierro
C. Diaz
J. Dick
H. Dickinson
S. W. Digel
D. Dimitrov
G. Disset
A. Djannati-Ataï
M. Doert
W. Domainko
D. Dorner
M. Doro
J. -L. Dournaux
D. Dravins
L. Drury
F. Dubois
R. Dubois
G. Dubus
C. Dufour
D. Durand
J. Dyks
M. Dyrda
E. Edy
Kathrin Egberts
C. Eleftheriadis
S. Elles
D. Emmanoulopoulos
R. Enomoto
J. -P. Ernenwein
M. Errando
A. Etchegoyen
A. D. Falcone
K. Farakos
C. Farnier
S. Federici
F. Feinstein
D. Ferenc
E. Fillin-Martino
D. Fink
C. Finley
J. P. Finley
R. Firpo
D. Florin
C. Foehr
E. Fokitis
Ll. Font
G. Fontaine
A. Fontana
A. Foerster
L. Fortson
N. Fouque
C. Fransson
G. W. Fraser
L. Fresnillo
C. Fruck
Y. Fujita
Y. Fukazawa
S. Funk
W. Gaebele
S. Gabici
A. Gadola
N. Galante
Y. Gallant
B. Garcia
R. J. Garcia Lopez
D. Garrido
L. Garrido
D. Gascon
C. Gasq
M. Gaug
J. Gaweda
N. Geffroy
C. Ghag
A. Ghedina
M. Ghigo
E. Gianakaki
S. Giarrusso
G. Giavitto
B. Giebels
E. Giro
P. Giubilato
T. Glanzman
J. -F. Glicenstein
M. Gochna
V. Golev
M. Gomez Berisso
A. Gonzalez
F. Gonzalez
F. Granena
R. Graciani
J. Granot
R. Gredig
A. Green
T. Greenshaw
O. Grimm
J. Grube
M. Grudzinska
J. Grygorczuk
V. Guarino
L. Guglielmi
F. Guilloux
S. Gunji
G. Gyuk
D. Hadasch
D. Haefner
R. Hagiwara
J. Hahn
A. Hallgren
S. Hara
M. J. Hardcastle
T. Hassan
T. Haubold
M. Hauser
M. Hayashida
R. Heller
G. Henri
G. Hermann
A. Herrero
James Anthony Hinton
D. Hoffmann
W. Hofmann
P. Hofverberg
D. Horns
D. Hrupec
H. Huan
B. Huber
J. -M. Huet
G. Hughes
K. Hultquist
T. B. Humensky
J. -F. Huppert
A. Ibarra
J. M. Illa
J. Ingjald
S. Inoue
Y. Inoue
K. Ioka
C. Jablonski
A. Jacholkowska
M. Janiak
P. Jean
H. Jensen
T. Jogler
I. Jung
P. Kaaret
S. Kabuki
J. Kakuwa
C. Kalkuhl
R. Kankanyan
M. Kapala
A. Karastergiou
M. Karczewski
S. Karkar
N. Karlsson
J. Kasperek
H. Katagiri
K. Katarzynski
N. Kawanaka
B. Kedziora
E. Kendziorra
B. Khelifi
D. Kieda
T. Kifune
T. Kihm
S. Klepser
W. Kluzniak
J. Knapp
A. R. Knappy
T. Kneiske
J. Knoedlseder
F. Koeck
K. Kodani
K. Kohri
K. Kokkotas
N. Komin
A. Konopelko
K. Kosack
R. Kossakowski
P. Kostka
J. Kotula
G. Kowal
J. Koziol
T. Kraehenbuehl
J. Krause
H. Krawczynski
F. Krennrich
A. Kretzschmann
H. Kubo
V. A. Kudryavtsev
J. Kushida
N. La Barbera
V. La Parola
G. La Rosa
A. Lopez
G. Lamanna
P. Laporte
C. Lavalley
T. Le Flour
A. Le Padellec
J. -P. Lenain
L. Lessio
B. Lieunard
E. Lindfors
A. Liolios
T. Lohse
S. Lombardi
A. Lopatin
E. Lorenz
P. Lubinski
O. Luz
E. Lyard
M. C. Maccarone
T. Maccarone
G. Maier
P. Majumdar
S. Maltezos
P. Malkiewicz
C. Mana
A. Manalaysay
G. Maneva
A. Mangano
P. Manigot
J. Marin
M. Mariotti
S. Markoff
G. Martinez
M. Martinez
A. Mastichiadis
H. Matsumoto
S. Mattiazzo
D. Mazin
T. J. L. McComb
N. McCubbin
I. McHardy
C. Medina
D. Melkumyan
A. Mendes
P. Mertsch
M. Meucci
J. Michalowski
P. Micolon
T. Mineo
N. Mirabal
F. Mirabel
J. M. Miranda
R. Mirzoyan
T. Mizuno
B. Moal
R. Moderski
E. Molinari
I. Monteiro
A. Moralejo
C. Morello
K. Mori
G. Motta
F. Mottez
E. Moulin
R. Mukherjee
P. Munar
H. Muraishi
K. Murase
A. Stj. Murphy
S. Nagataki
T. Naito
T. Nakamori
K. Nakayama
C. L. Naumann
D. Naumann
P. Nayman
D. Nedbal
A. Niedzwiecki
J. Niemiec
A. Nikolaidis
K. Nishijima
S. J. Nolan
N. Nowak
P. T. O'Brien
I. Ochoa
Y. Ohira
M. Ohishi
H. Ohka
A. Okumura
C. Olivetto
R. A. Ong
R. Orito
M. Orr
J. P. Osborne
M. Ostrowski
L. Otero
A. N. Otte
E. Ovcharov
I. Oya
A. Ozieblo
S. Paiano
J. Pallota
J. L. Panazol
D. Paneque
M. Panter
R. Paoletti
G. Papyan
J. M. Paredes
G. Pareschi
R. D. Parsons
M. Paz Arribas
G. Pedaletti
A. Pepato
M. Persic
P. O. Petrucci
B. Peyaud
W. Piechocki
S. Pita
G. Pivato
L. Platos
R. Platzer
L. Pogosyan
Martin Pohl
G. Pojmanski
J. D. Ponz
W. Potter
E. Prandini
R. Preece
H. Prokoph
G. Puehlhofer
M. Punch
E. Quel
A. Quirrenbach
P. Rajda
R. Rando
M. Rataj
M. Raue
C. Reimann
O. Reimann
A. Reimer
O. Reimer
M. Renaud
S. Renner
J. -M. Reymond
W. Rhode
M. Ribo
M. Ribordy
J. Rico
F. Rieger
P. Ringegni
J. Ripken
P. Ristori
S. Rivoire
L. Rob
S. Rodriguez
U. Roeser
P. Romano
G. E. Romero
S. Rosier-Lees
A. C. Rovero
F. Roy
S. Royer
B. Rudak
C. B. Rulten
J. Ruppel
F. Russo
F. Ryde
B. Sacco
A. Saggion
V. Sahakian
K. Saito
T. Saito
N. Sakaki
E. Salazar
A. Salini
F. Sanchez
M. A. Sanchez Conde
A. Santangelo
E. M. Santos
A. Sanuy
L. Sapozhnikov
S. Sarkar
V. Scalzotto
V. Scapin
M. Scarcioffolo
T. Schanz
S. Schlenstedt
R. Schlickeiser
T. Schmidt
J. Schmoll
M. Schroedter
C. Schultz
J. Schultze
A. Schulz
U. Schwanke
S. Schwarzburg
T. Schweizer
J. Seiradakis
S. Selmane
K. Seweryn
M. Shayduk
R. C. Shellard
T. Shibata
M. Sikora
J. Silk
A. Sillanpaa
J. Sitarek
C. Skole
N. Smith
D. Sobczynska
M. Sofo Haro
H. Sol
F. Spanier
D. Spiga
S. Spyrou
V. Stamatescu
A. Stamerra
R. L. C. Starling
L. Stawarz
R. Steenkamp
Christian Stegmann
S. Steiner
N. Stergioulas
R. Sternberger
F. Stinzing
M. Stodulski
U. Straumann
A. Suarez
M. Suchenek
R. Sugawara
K. H. Sulanke
S. Sun
A. D. Supanitsky
P. Sutcliffe
M. Szanecki
T. Szepieniec
A. Szostek
A. Szymkowiak
G. Tagliaferri
H. Tajima
H. Takahashi
K. Takahashi
L. Takalo
H. Takami
R. G. Talbot
P. H. Tam
M. Tanaka
T. Tanimori
M. Tavani
J. -P. Tavernet
C. Tchernin
L. A. Tejedor
Igor O. Telezhinsky
P. Temnikov
C. Tenzer
Y. Terada
R. Terrier
M. Teshima
V. Testa
L. Tibaldo
O. Tibolla
M. Tluczykont
C. J. Todero Peixoto
F. Tokanai
M. Tokarz
K. Toma
D. F. Torres
G. Tosti
T. Totani
F. Toussenel
P. Vallania
G. Vallejo
J. van der Walt
C. van Eldik
J. Vandenbroucke
H. Vankov
G. Vasileiadis
V. V. Vassiliev
I. Vegas
L. Venter
S. Vercellone
C. Veyssiere
J. P. Vialle
M. Videla
P. Vincent
J. Vink
N. Vlahakis
L. Vlahos
P. Vogler
A. Vollhardt
F. Volpe
H. P. Von Gunten
S. Vorobiov
S. Wagner
R. M. Wagner
B. Wagner
S. P. Wakely
P. Walter
R. Walter
R. Warwick
P. Wawer
R. Wawrzaszek
N. Webb
P. Wegner
A. Weinstein
Q. Weitzel
R. Welsing
H. Wetteskind
R. White
A. Wierzcholska
M. I. Wilkinson
D. A. Williams
M. Winde
R. Wischnewski
L. Wisniewski
A. Wolczko
M. Wood
Q. Xiong
T. Yamamoto
K. Yamaoka
R. Yamazaki
S. Yanagita
B. Yoffo
M. Yonetani
A. Yoshida
T. Yoshida
T. Yoshikoshi
V. Zabalza
A. Zagdanski
A. Zajczyk
A. Zdziarski
Alraune Zech
K. Zietara
P. Ziolkowski
V. Zitelli
P. Zychowski
eng
uncontrolled
Ground based gamma ray astronomy
eng
uncontrolled
Next generation Cherenkov telescopes
eng
uncontrolled
Design concepts
Institut für Physik und Astronomie
Referiert
35161
2013
2013
eng
3
18
16
2
43
preprint
Elsevier
Amsterdam
CTA Consortium
1
--
--
--
Introducing the CTA concept
The Cherenkov Telescope Array (CTA) is a new observatory for very high-energy (VHE) gamma rays. CTA has ambitions science goals, for which it is necessary to achieve full-sky coverage, to improve the sensitivity by about an order of magnitude, to span about four decades of energy, from a few tens of GeV to above 100 TeV with enhanced angular and energy resolutions over existing VHE gamma-ray observatories. An international collaboration has formed with more than 1000 members from 27 countries in Europe, Asia, Africa and North and South America. In 2010 the CTA Consortium completed a Design Study and started a three-year Preparatory Phase which leads to production readiness of CTA in 2014. In this paper we introduce the science goals and the concept of CTA, and provide an overview of the project.
Astroparticle physics
10.1016/j.astropartphys.2013.01.007
0927-6505
1873-2852
wos:2011-2013
WOS:000318126800002
Martinez, M (reprint author), Inst Fis Altes Energies, Barcelona, Spain., martinez@ifae.es
B. S. Acharya
M. Actis
T. Aghajani
G. Agnetta
J. Aguilar
Felix A. Aharonian
M. Ajello
A. G. Akhperjanian
M. Alcubierre
J. Aleksic
R. Alfaro
E. Aliu
A. J. Allafort
D. Allan
I. Allekotte
E. Amato
J. Anderson
Ekrem Oǧuzhan Angüner
L. A. Antonelli
P. Antoranz
A. Aravantinos
T. Arlen
T. Armstrong
H. Arnaldi
L. Arrabito
K. Asano
T. Ashton
H. G. Asorey
Y. Awane
H. Baba
A. Babic
N. Baby
J. Baehr
A. Bais
C. Baixeras
S. Bajtlik
M. Balbo
D. Balis
C. Balkowski
A. Bamba
R. Bandiera
A. Barber
C. Barbier
M. Barcelo
Anna Barnacka
Jürgen Barnstedt
U. Barres de Almeida
J. A. Barrio
A. Basili
S. Basso
D. Bastieri
C. Bauer
Anton N. Baushev
J. Becerra Gonzalez
Yvonne Becherini
K. C. Bechtol
J. Becker Tjus
Volker Beckmann
W. Bednarek
B. Behera
M. Belluso
W. Benbow
J. Berdugo
K. Berger
F. Bernard
T. Bernardino
K. Bernlöhr
N. Bhat
S. Bhattacharyya
C. Bigongiari
A. Biland
S. Billotta
T. Bird
E. Birsin
E. Bissaldi
Jonathan Biteau
M. Bitossi
S. Blake
O. Blanch Bigas
P. Blasi
A. A. Bobkov
V. Boccone
Markus Boettcher
L. Bogacz
J. Bogart
M. Bogdan
Catherine Boisson
J. Boix Gargallo
J. Bolmont
G. Bonanno
A. Bonardi
T. Bonev
P. Bonifacio
G. Bonnoli
Pol Bordas
A. W. Borgland
Janett Borkowski
R. Bose
O. Botner
A. Bottani
L. Bouchet
M. Bourgeat
C. Boutonnet
A. Bouvier
S. Brau-Nogue
I. Braun
T. Bretz
M. S. Briggs
T. Bringmann
P. Brook
Pierre Brun
L. Brunetti
T. Buanes
J. H. Buckley
R. Buehler
V. Bugaev
A. Bulgarelli
Tomasz Bulik
G. Busetto
S. Buson
K. Byrum
M. Cailles
R. A. Cameron
J. Camprecios
R. Canestrari
S. Cantu
M. Capalbi
P. A. Caraveo
E. Carmona
A. Carosi
John Carr
P. H. Carton
Sabrina Casanova
M. Casiraghi
O. Catalano
S. Cavazzani
S. Cazaux
M. Cerruti
E. Chabanne
Paula M. Chadwick
C. Champion
Andrew Chen
J. Chiang
L. Chiappetti
M. Chikawa
V. R. Chitnis
F. Chollet
J. Chudoba
M. Cieslar
A. N. Cillis
J. Cohen-Tanugi
Sergio Colafrancesco
P. Colin
J. Calome
S. Colonges
M. Compin
P. Conconi
V. Conforti
V. Connaughton
Jan Conrad
J. L. Contreras
P. Coppi
P. Corona
D. Corti
J. Cortina
L. Cossio
H. Costantini
G. Cotter
B. Courty
S. Couturier
S. Covino
G. Crimi
S. J. Criswell
J. Croston
G. Cusumano
M. Dafonseca
O. Dale
M. Daniel
J. Darling
I. Davids
F. Dazzi
A. De Angelis
V. De Caprio
F. De Frondat
E. M. de Gouveia Dal Pino
I. de la Calle
G. A. De La Vega
R. de los Reyes Lopez
B. De Lotto
A. De Luca
J. R. T. de Mello Neto
M. de Naurois
Y. de Oliveira
E. de Ona Wilhelmi
V. de Souza
G. Decerprit
G. Decock
C. Deil
E. Delagnes
G. Deleglise
C. Delgado
D. Della Volpe
P. Demange
G. Depaola
A. Dettlaff
A. Di Paola
F. Di Pierro
C. Diaz
J. Dick
R. Dickherber
H. Dickinson
V. Diez-Blanco
S. Digel
D. Dimitrov
G. Disset
A. Djannati-Ataï
M. Doert
M. Dohmke
W. Domainko
Dijana Dominis Prester
A. Donat
D. Dorner
M. Doro
J-L. Dournaux
G. Drake
D. Dravins
L. Drury
F. Dubois
R. Dubois
G. Dubus
C. Dufour
D. Dumas
J. Dumm
D. Durand
J. Dyks
M. Dyrda
J. Ebr
E. Edy
Kathrin Egberts
P. Eger
S. Einecke
C. Eleftheriadis
S. Elles
D. Emmanoulopoulos
D. Engelhaupt
R. Enomoto
J-P Ernenwein
M. Errando
A. Etchegoyen
P. Evans
A. Falcone
D. Fantinel
K. Farakos
C. Farnier
G. Fasola
B. Favill
E. Fede
S. Federici
S. Fegan
F. Feinstein
D. Ferenc
P. Ferrando
M. Fesquet
A. Fiasson
E. Fillin-Martino
D. Fink
C. Finley
J. P. Finley
M. Fiorini
R. Firpo Curcoll
H. Flores
D. Florin
W. Focke
C. Foehr
E. Fokitis
L. Font
G. Fontaine
M. Fornasa
A. Foerster
L. Fortson
N. Fouque
A. Franckowiak
C. Fransson
G. Fraser
R. Frei
I. F. M. Albuquerque
L. Fresnillo
C. Fruck
Y. Fujita
Y. Fukazawa
Y. Fukui
S. Funk
W. Gaebele
S. Gabici
R. Gabriele
A. Gadola
N. Galante
D. Gall
Y. Gallant
J. Gamez-Garcia
B. Garcia
R. Garcia Lopez
D. Gardiol
D. Garrido
L. Garrido
D. Gascon
M. Gaug
J. Gaweda
L. Gebremedhin
N. Geffroy
L. Gerard
A. Ghedina
M. Ghigo
E. Giannakaki
F. Gianotti
S. Giarrusso
G. Giavitto
B. Giebels
V. Gika
P. Giommi
N. Girard
E. Giro
A. Giuliani
T. Glanzman
J. -F. Glicenstein
N. Godinovic
V. Golev
M. Gomez Berisso
J. Gomez-Ortega
M. M. Gonzalez
A. Gonzalez
F. Gonzalez
A. Gonzalez Munoz
K. S. Gothe
M. Gougerot
R. Graciani
P. Grandi
F. Granena
J. Granot
G. Grasseau
R. Gredig
A. Green
T. Greenshaw
T. Gregoire
O. Grimm
J. Grube
M. Grudzinska
V. Gruev
S. Gruenewald
J. Grygorczuk
V. Guarino
S. Gunji
G. Gyuk
D. Hadasch
R. Hagiwara
J. Hahn
N. Hakansson
A. Hallgren
N. Hamer Heras
S. Hara
M. J. Hardcastle
J. Harris
T. Hassan
K. Hatanaka
T. Haubold
A. Haupt
T. Hayakawa
M. Hayashida
R. Heller
F. Henault
G. Henri
G. Hermann
R. Hermel
A. Herrero
N. Hidaka
J. Hinton
D. Hoffmann
W. Hofmann
P. Hofverberg
J. Holder
D. Horns
D. Horville
J. Houles
M. Hrabovsky
D. Hrupec
H. Huan
B. Huber
J. -M. Huet
G. Hughes
T. B. Humensky
J. Huovelin
A. Ibarra
J. M. Illa
D. Impiombato
S. Incorvaia
S. Inoue
Y. Inoue
K. Ioka
E. Ismailova
C. Jablonski
A. Jacholkowska
M. Jamrozy
M. Janiak
P. Jean
C. Jeanney
J. J. Jimenez
T. Jogler
T. Johnson
L. Journet
C. Juffroy
I. Jung
P. Kaaret
S. Kabuki
M. Kagaya
J. Kakuwa
C. Kalkuhl
R. Kankanyan
A. Karastergiou
K. Kaercher
M. Karczewski
S. Karkar
Aci. Kasperek
D. Kastana
H. Katagiri
J. Kataoka
K. Katarzynski
U. Katz
N. Kawanaka
B. Kellner-Leidel
H. Kelly
E. Kendziorra
B. Khelifi
D. B. Kieda
T. Kifune
T. Kihm
T. Kishimoto
K. Kitamoto
W. Kluzniak
C. Knapic
J. w Knapp
J. Knoedlseder
F. Koeck
J. Kocot
K. Kodani
J. -H. Koehne
K. Kohri
K. Kokkotas
D. Kolitzus
N. Komin
I. Kominis
Y. Konno
H. Koeppel
P. Korohoda
K. Kosack
G. Koss
R. Kossakowski
P. Kostka
R. Koul
G. Kowal
S. Koyama
J. Koziol
T. Kraehenbuehl
J. Krause
H. Krawzcynski
F. Krennrich
A. Krepps
A. Kretzschmann
R. Krobot
P. Krueger
H. Kubo
V. A. Kudryavtsev
J. Kushida
A. Kuznetsov
A. La Barbera
N. La Palombara
V. La Parola
G. La Rosa
K. Lacombe
G. Lamanna
J. Lande
D. Languignon
J. Lapington
P. Laporte
C. Lavalley
T. Le Flour
A. Le Padellec
S. -H. Lee
W. H. Lee
M. A. Leigui de Oliveira
D. Lelas
J. -P. Lenain
D. J. Leopold
T. Lerch
L. Lessio
B. Lieunard
E. Lindfors
A. Liolios
A. Lipniacka
H. Lockart
T. Lohse
S. Lombardi
A. Lopatin
M. Lopez
R. Lopez-Coto
A. Lopez-Oramas
A. Lorca
E. Lorenz
P. Lubinski
F. Lucarelli
H. Luedecke
J. Ludwin
P. L. Luque-Escamilla
W. Lustermann
O. Luz
E. Lyard
M. C. Maccarone
T. J. Maccarone
G. M. Madejski
A. Madhavan
M. Mahabir
G. Maier
P. Majumdar
G. Malaguti
S. Maltezos
A. Manalaysay
A. Mancilla
D. Mandat
G. Maneva
A. Mangano
P. Manigot
K. Mannheim
I. Manthos
N. Maragos
A. Marcowith
M. Mariotti
M. Marisaldi
S. Markoff
A. Marszalek
C. Martens
J. Marti
J-M. Martin
P. Martin
G. Martinez
F. Martinez
M. Martinez
A. Masserot
A. Mastichiadis
A. Mathieu
H. Matsumoto
F. Mattana
S. Mattiazzo
G. Maurin
S. Maxfield
J. Maya
D. Mazin
L. Mc Comb
N. McCubbin
I. McHardy
R. McKay
C. Medina
C. Melioli
D. Melkumyan
S. Mereghetti
P. Mertsch
M. Meucci
J. Michalowski
P. Micolon
A. Mihailidis
T. Mineo
M. Minuti
N. Mirabal
F. Mirabel
J. M. Miranda
R. Mirzoyan
T. Mizuno
B. Moal
R. Moderski
I. Mognet
E. Molinari
M. Molinaro
T. Montaruli
I. Monteiro
P. Moore
A. Moralejo Olaizola
M. Mordalska
C. Morello
K. Mori
F. Mottez
Y. Moudden
E. Moulin
I. Mrusek
R. Mukherjee
P. Munar-Adrover
H. Muraishi
K. Murase
A. Murphy
S. Nagataki
T. Naito
D. Nakajima
T. Nakamori
K. Nakayama
C. L. Naumann
D. Naumann
M. Naumann-Godo
P. Nayman
D. Nedbal
D. Neise
L. Nellen
V. Neustroev
N. Neyroud
L. Nicastro
J. Nicolau-Kuklinski
A. Niedzwiecki
J. Niemiec
D. Nieto
A. Nikolaidis
K. Nishijima
S. Nolan
R. Northrop
D. Nosek
N. Nowak
A. Nozato
P. O'Brien
Y. Ohira
M. Ohishi
S. Ohm
H. Ohoka
T. Okuda
A. Okumura
J. -F. Olive
R. A. Ong
R. Orito
M. Orr
J. Osborne
M. Ostrowski
L. A. Otero
N. Otte
E. Ovcharov
I. Oya
A. Ozieblo
L. Padilla
S. Paiano
D. Paillot
A. Paizis
S. Palanque
M. Palatka
J. Pallota
K. Panagiotidis
J. -L. Panazol
D. Paneque
M. Panter
R. Paoletti
Alexandros Papayannis
G. Papyan
J. M. Paredes
G. Pareschi
G. Parks
J. -M. Parraud
D. Parsons
M. Paz Arribas
M. Pech
G. Pedaletti
V. Pelassa
D. Pelat
M. D. C. Perez
M. Persic
P-O Petrucci
B. Peyaud
A. Pichel
S. Pita
F. Pizzolato
L. Platos
R. Platzer
L. Pogosyan
M. Pohl
G. Pojmanski
J. D. Ponz
W. Potter
J. Poutanen
E. Prandini
J. Prast
R. Preece
F. Profeti
H. Prokoph
M. Prouza
M. Proyetti
I. Puerto-Gimenez
G. Puehlhofer
I. Puljak
M. Punch
R. Pyziol
E. J. Quel
J. Quinn
A. Quirrenbach
E. Racero
P. J. Rajda
P. Ramon
R. Rando
R. C. Rannot
M. Rataj
M. Raue
P. Reardon
O. Reimann
A. Reimer
O. Reimer
K. Reitberger
M. Renaud
S. Renner
B. Reville
W. Rhode
M. Ribo
M. Ribordy
M. G. Richer
J. Rico
J. Ridky
F. Rieger
P. Ringegni
J. Ripken
P. R. Ristori
A. Riviere
S. Rivoire
L. Rob
U. Roeser
R. Rohlfs
G. Rojas
P. Romano
W. Romaszkan
G. E. Romero
S. Rosen
S. Rosier Lees
D. Ross
G. Rouaix
J. Rousselle
S. Rousselle
A. C. Rovero
F. Roy
S. Royer
B. Rudak
C. Rulten
M. Rupinski
F. Russo
F. Ryde
B. Sacco
E. O. Saemann
A. Saggion
V. Safiakian
K. Saito
T. Saito
Y. Saito
N. Sakaki
R. Sakonaka
A. Salini
F. Sanchez
M. Sanchez-Conde
A. Sandoval
H. Sandaker
E. Sant'Ambrogio
A. Santangelo
E. M. Santos
A. Sanuy
L. Sapozhnikov
S. Sarkar
N. Sartore
H. Sasaki
K. Satalecka
M. Sawada
V. Scalzotto
V. Scapin
M. Scarcioffolo
J. Schafer
T. Schanz
S. Schlenstedt
R. Schlickeiser
T. Schmidt
J. Schmoll
P. Schovanek
M. Schroedter
C. Schultz
J. Schultze
A. Schulz
K. Schure
T. Schwab
U. Schwanke
J. Schwarz
S. Schwarzburg
T. Schweizer
S. Schwemmer
A. Segreto
J. -H. Seiradakis
G. H. Sembroski
K. Seweryn
M. Sharma
M. Shayduk
R. C. Shellard
J. Shi
T. Shibata
A. Shibuya
E. Shum
L. Sidoli
M. Sidz
J. Sieiro
M. Sikora
J. Silk
A. Sillanpaa
B. B. Singh
J. Sitarek
C. Skole
R. Smareglia
A. Smith
D. Smith
J. Smith
N. Smith
D. Sobczynska
H. Sol
G. Sottile
M. Sowinski
F. Spanier
D. Spiga
S. Spyrou
V. Stamatescu
A. Stamerra
R. Starling
L. Stawarz
R. Steenkamp
Christian Stegmann
S. Steiner
N. Stergioulas
R. Sternberger
M. Sterzel
F. Stinzing
M. Stodulski
U. Straumann
E. Strazzeri
L. Stringhetti
A. Suarez
M. Suchenek
R. Sugawara
K. -H. Sulanke
S. Sun
A. D. Supanitsky
T. Suric
P. Sutcliffe
J. Sykes
M. Szanecki
T. Szepieniec
A. Szostek
G. Tagliaferri
H. Tajima
H. Takahashi
K. Takahashi
L. Takalo
H. Takami
C. Talbot
J. Tammi
M. Tanaka
S. Tanaka
J. Tasan
M. Tavani
J. -P. Tavernet
L. A. Tejedor
Igor O. Telezhinsky
P. Temnikov
C. Tenzer
Y. Terada
R. Terrier
M. Teshima
V. Testa
D. Tezier
D. Thuermann
L. Tibaldo
O. Tibolla
A. Tiengo
M. Tluczykont
C. J. Todero Peixoto
F. Tokanai
M. Tokarz
K. Toma
K. Torii
M. Tornikoski
D. F. Torres
M. Torres
G. Tosti
T. Totani
C. Toussenel
G. Tovmassian
P. Travnicek
M. Trifoglio
I. Troyano
K. Tsinganos
H. Ueno
K. Umehara
S. S. Upadhya
T. Usher
M. Uslenghi
J. F. Valdes-Galicia
P. Vallania
G. Vallejo
W. van Driel
C. van Eldik
J. Vandenbrouke
J. Vanderwalt
H. Vankov
G. Vasileiadis
V. Vassiliev
D. Veberic
I. Vegas
S. Vercellone
S. Vergani
C. Veyssiere
J. P. Vialle
A. Viana
M. Videla
P. Vincent
S. Vincent
J. Vink
N. Vlahakis
L. Vlahos
P. Vogler
A. Vollhardt
H. P. von Gunten
S. Vorobiov
C. Vuerli
V. Waegebaert
R. Wagner
R. G. Wagner
S. Wagner
S. P. Wakely
R. Walter
T. Walther
K. Warda
R. Warwick
P. Wawer
R. Wawrzaszek
N. Webb
P. Wegner
A. Weinstein
Q. Weitzel
R. Welsing
M. Werner
H. Wetteskind
R. White
A. Wierzcholska
S. Wiesand
M. Wilkinson
D. A. Williams
R. Willingale
K. Winiarski
R. Wischnewski
L. Wisniewski
M. Wood
A. Woernlein
Q. Xiong
K. K. Yadav
H. Yamamoto
T. Yamamoto
R. Yamazaki
S. Yanagita
J. M. Yebras
D. Yelos
A. Yoshida
T. Yoshida
T. Yoshikoshi
V. Zabalza
M. Zacharias
A. Zajczyk
R. Zanin
A. Zdziarski
Alraune Zech
A. Zhao
X. Zhou
K. Zietara
J. Ziolkowski
P. Ziolkowski
V. Zitelli
C. Zurbach
P. Zychowski
eng
uncontrolled
TeV gamma-ray astronomy
eng
uncontrolled
Air showers
eng
uncontrolled
Cherenkov Telescopes
Institut für Physik und Astronomie
Referiert
38708
2015
2015
eng
2
580
other
EDP Sciences
Les Ulis
HESS Collaboration
1
--
--
--
H.E.S.S. detection of TeV emission from the interaction region between the supernova remnant G349.7+0.2 and a molecular cloud (vol 574, A100, 2015)
Astronomy and astrophysics : an international weekly journal
10.1051/0004-6361/201425070e
1432-0746
wos:2015
C1
WOS:000360020200143
Fernandez, D (reprint author), Univ Montpellier 2, IN2P3, CNRS, Lab Univers & Particules Montpellier, CC 72,Pl Eugene Bataillon, F-34095 Montpellier 5, France., diane_0077@hotmail.com; cyril.trichard@lapp.in2p3.fr
Attila Abramowski
Felix A. Aharonian
Faical Ait Benkhali
A. G. Akhperjanian
Ekrem Oǧuzhan Angüner
Michael Backes
Shangkari Balenderan
Arnim Balzer
Anna Barnacka
Yvonne Becherini
Julia Becker Tjus
David Berge
Sabrina Bernhard
Konrad Bernlöhr
E. Birsin
Jonathan Biteau
Markus Böttcher
Catherine Boisson
J. Bolmont
Pol Bordas
Johan Bregeon
Francois Brun
Pierre Brun
Mark Bryan
Tomasz Bulik
Svenja Carrigan
Sabrina Casanova
Paula M. Chadwick
Nachiketa Chakraborty
R. Chalme-Calvet
Ryan C. G. Chaves
M. Chretien
Sergio Colafrancesco
Gabriele Cologna
Jan Conrad
Claire Couturier
Yudong Cui
Isak Delberth Davids
Bernhard Degrange
Christoph Deil
P. deWilt
A. Djannati-Ataï
Wilfried Domainko
Axel Donath
G. Dubus
K. Dutson
J. Dyks
M. Dyrda
Tanya Edwards
Kathrin Egberts
Peter Eger
P. Espigat
C. Farnier
Stephen Fegan
Fabrice Feinstein
Milton Virgilio Fernandes
Diane Fernandez
A. Fiasson
Gerard Fontaine
Andreas Förster
M. Fuessling
S. Gabici
M. Gajdus
Yves A. Gallant
Tania Garrigoux
G. Giavitto
Berrie Giebels
Jean-Francois Glicenstein
Daniel Gottschall
M. -H. Grondin
M. Grudzinska
Daniela Hadasch
S. Haeffner
Joachim Hahn
Jonathan Harris
Götz Heinzelmann
G. Henri
German Hermann
O. Hervet
Andreas Hillert
James Anthony Hinton
Werner Hofmann
Petter Hofverberg
Markus Holler
Dieter Horns
Alex Ivascenko
A. Jacholkowska
C. Jahn
Marek Jamrozy
M. Janiak
F. Jankowsky
I. Jung-Richardt
Max Anton Kastendieck
K. Katarzynski
U. Katz
S. Kaufmann
B. Khelifi
Michel Kieffer
S. Klepser
Dmitry Klochkov
W. Kluzniak
David Kolitzus
Nu Komin
Karl Kosack
Steffen Krakau
F. Krayzel
Pat P. Krueger
H. Laffon
G. Lamanna
J. Lefaucheur
Valentin Lefranc
A. Lemiere
M. Lemoine-Goumard
J. -P. Lenain
Thomas Lohse
A. Lopatin
Chia-Chun Lu
Vincent Marandon
Alexandre Marcowith
Ramin Marx
G. Maurin
Nigel Maxted
Michael Mayer
T. J. Lowry McComb
J. Mehault
P. J. Meintjes
Ulf Menzler
M. Meyer
Alison M. W. Mitchell
R. Moderski
M. Mohamed
K. Mora
Emmanuel Moulin
Thomas Murach
Mathieu de Naurois
J. Niemiec
Sam J. Nolan
Louise Oakes
Hirokazu Odaka
S. Ohm
Björn Optiz
Michal Ostrowski
I. Oya
Michael Panter
R. Daniel Parsons
M. Paz Arribas
Nikki W. Pekeur
G. Pelletier
P. -O. Petrucci
B. Peyaud
S. Pita
Helen Poon
Gerd Pühlhofer
M. Punch
A. Quirrenbach
S. Raab
I. Reichardt
Anita Reimer
Olaf Reimer
Metz Renaud
Raquel de los Reyes
Frank Rieger
C. Romoli
S. Rosier-Lees
G. Rowell
B. Rudak
C. B. Rulten
Vardan Sahakian
D. Salek
David M. Sanchez
Andrea Santangelo
Reinhard Schlickeiser
F. Schuessler
A. Schulz
Ullrich Schwanke
S. Schwarzburg
S. Schwemmer
H. Sol
Felix Spanier
G. Spengler
Franziska Spies
Lukasz Stawarz
Riaan Steenkamp
Christian Stegmann
F. Stinzing
K. Stycz
Iurii Sushch
J. -P. Tavernet
T. Tavernier
A. M. Taylor
R. Terrier
Martin Tluczykont
C. Trichard
K. Valerius
C. van Eldik
B. van Soelen
Georges Vasileiadis
J. Veh
Christo Venter
Aion Viana
P. Vincent
Jacco Vink
Heinrich J. Völk
Francesca Volpe
Martine Vorster
T. Vuillaume
S. J. Wagner
P. Wagner
R. M. Wagner
Martin Ward
Matthias Weidinger
Quirin Weitzel
R. White
A. Wierzcholska
P. Willmann
A. Woernlein
D. Wouters
Ruizhi Yang
Victor Zabalza
Dmitry Zaborov
M. Zacharias
A. A. Zdziarski
Alraune Zech
Hannes -S. Zechlin
eng
uncontrolled
gamma rays: general
eng
uncontrolled
ISM: supernova remnants
eng
uncontrolled
ISM: clouds
eng
uncontrolled
errata, addenda
Institut für Physik und Astronomie
Referiert
37483
2014
2014
eng
6
1
794
article
IOP Publ. Ltd.
Bristol
HESS Collaboration
1
--
--
--
Discovery of the hard spectrum VHE gamma-ray source Hess J1641-463
This Letter reports the discovery of a remarkably hard spectrum source, HESS J1641-463, by the High Energy Stereoscopic System (H.E.S.S.) in the very high energy (VHE) domain. HESS J1641-463 remained unnoticed by the usual analysis techniques due to confusion with the bright nearby source HESS J1640-465. It emerged at a significance level of 8.5 standard deviations after restricting the analysis to events with energies above 4 TeV. It shows a moderate flux level of phi(E > 1TeV) = (3.64 +/- 0.44(stat)+/- 0.73(sys)) x 10(-13) cm(-2) s(-1), corresponding to 1.8% of the Crab Nebula flux above the same energy, and a hard spectrum with a photon index of Gamma = 2.07 +/- 0.11(stat)+/- 0.20(sys). It is a point-like source, although an extension up to a Gaussian width of sigma = 3 arcmin cannot be discounted due to uncertainties in the H.E.S.S. point-spread function. The VHE gamma-ray flux of HESS J1641-463 is found to be constant over the observed period when checking time binnings from the year-by-year to the 28 minute exposure timescales. HESS J1641-463 is positionally coincident with the radio supernova remnant SNR G338.5+0.1. No X-ray candidate stands out as a clear association; however, Chandra and XMM-Newton data reveal some potential weak counterparts. Various VHE gamma-ray production scenarios are discussed. If the emission from HESS J1641-463 is produced by cosmic ray protons colliding with the ambient gas, then their spectrum must extend close to 1 PeV. This object may represent a source population contributing significantly to the galactic cosmic ray flux around the knee.
The astrophysical journal : an international review of spectroscopy and astronomical physics ; Part 2, Letters
10.1088/2041-8205/794/1/L1
2041-8205
2041-8213
wos:2014
L1
WOS:000343304300001
Abramowski, A (reprint author), Univ Hamburg, Inst Expt Phys, Luruper Chaussee 149, D-22761 Hamburg, Germany., sabrina.casanova@ifj.edu.pl; igor.oya.vallejo@desy.de
German Ministry for Education and Research (BMBF); Max Planck Society;
French Ministry for Research; CNRS-IN2P3; Astroparticle
Interdisciplinary Programme of the CNRS; U.K. Science and Technology
Facilities Council (STFC); IPNP of the Charles University; Polish
Ministry of Science and Higher Education; South African Department of
Science and Technology and National Research Foundation; University of
Namibia; European Community [ERC-StG-259391]
Attila Abramowski
Felix A. Aharonian
Faical Ait Benkhali
A. G. Akhperjanian
E. O. Ang Uner
Michael Backes
Shangkari Balenderan
Arnim Balzer
Anna Barnacka
Yvonne Becherini
J. Becker Tjus
David Berge
Sabrina Bernhard
K. Bernlöhr
E. Birsin
Jonathan Biteau
Markus Boettcher
Catherine Boisson
J. Bolmont
Pol Bordas
Johan Bregeon
Francois Brun
Pierre Brun
Mark Bryan
Tomasz Bulik
Svenja Carrigan
Sabrina Casanova
Paula M. Chadwick
N. Chakraborty
R. Chalme-Calvet
Ryan C. G. Chaves
M. Chretien
Sergio Colafrancesco
Gabriele Cologna
Jan Conrad
C. Couturier
Y. Cui
M. Dalton
I. D. Davids
B. Degrange
C. Deil
P. deWilt
A. Djannati-Ataï
W. Domainko
A. Donath
G. Dubus
K. Dutson
J. Dyks
M. Dyrda
T. Edwards
Kathrin Egberts
P. Eger
P. Espigat
C. Farnier
S. Fegan
F. Feinstein
M. V. Fernandes
D. Fernandez
A. Fiasson
G. Fontaine
A. Foerster
M. Fuessling
S. Gabici
M. Gajdus
Y. A. Gallant
T. Garrigoux
G. Giavitto
B. Giebels
J. F. Glicenstein
D. Gottschall
M. -H. Grondin
M. Grudzinska
D. Hadasch
S. Haeffner
J. Hahn
J. Harris
G. Heinzelmann
G. Henri
G. Hermann
O. Hervet
A. Hillert
James Anthony Hinton
W. Hofmann
P. Hofverberg
Markus Holler
D. Horns
A. Ivascenko
A. Jacholkowska
C. Jahn
M. Jamrozy
M. Janiak
F. Jankowsky
I. Jung-Richardt
M. A. Kastendieck
K. Katarzynski
U. Katz
S. Kaufmann
B. Khelifi
M. Kieffer
S. Klepser
D. Klochkov
W. Kluzniak
D. Kolitzus
Nu. Komin
K. Kosack
S. Krakau
F. Krayzel
P. P. Krueger
H. Laffon
G. Lamanna
J. Lau
J. Lefaucheur
V. Lefranc
A. Lemiere
M. Lemoine-Goumard
J. -P. Lenain
T. Lohse
A. Lopatin
C. -C. Lu
V. Marandon
A. Marcowith
R. Marx
G. Maurin
N. Maxted
M. Mayer
T. J. L. McComb
J. Mehault
P. J. Meintjes
U. Menzler
M. Meyer
A. M. W. Mitchell
R. Moderski
M. Mohamed
K. Mora
E. Moulin
T. Murach
M. de Naurois
J. Niemiec
S. J. Nolan
L. Oakes
H. Odaka
S. Ohm
B. Opitz
M. Ostrowski
I. Oya
M. Panter
R. D. Parsons
M. Paz Arribas
N. W. Pekeur
G. Pelletier
P. -O. Petrucci
B. Peyaud
S. Pita
H. Poon
G. Puehlhofer
M. Punch
A. Quirrenbach
S. Raab
I. Reichardt
A. Reimer
O. Reimer
M. Renaud
R. de Los Reyes
F. Rieger
C. Romoli
S. Rosier-Lees
G. Rowell
B. Rudak
C. B. Rulten
V. Sahakian
D. Salek
David M. Sanchez
A. Santangelo
R. Schlickeiser
F. Schuessler
A. Schulz
U. Schwanke
S. Schwarzburg
S. Schwemmer
H. Sol
F. Spanier
G. Spengler
F. Spies
L. Stawarz
R. Steenkamp
Christian Stegmann
F. Stinzing
K. Stycz
Iurii Sushch
J. -P. Tavernet
T. Tavernier
A. M. Taylor
R. Terrier
M. Tluczykont
C. Trichard
K. Valerius
C. Van Eldik
B. van Soelen
G. Vasileiadis
J. Veh
C. Venter
A. Viana
P. Vincent
J. Vink
H. J. Voelk
F. Volpe
M. Vorster
T. Vuillaume
S. J. Wagner
P. Wagner
R. M. Wagner
M. Ward
M. Weidinger
Q. Weitzel
R. White
A. Wierzcholska
P. Willmann
A. Woernlein
D. Wouters
R. Yang
V. Zabalza
D. Zaborov
M. Zacharias
A. A. Zdziarski
Alraune Zech
H. -S. Zechlin
Y. Fukui
H. Sano
T. Fukuda
S. Yoshiike
eng
uncontrolled
cosmic rays
eng
uncontrolled
gamma rays: general
eng
uncontrolled
ISM: individual objects (SNR G338.3-0.0, SNR G338.5+0.1)
Institut für Physik und Astronomie
Referiert
38944
2015
2015
eng
6
577
article
EDP Sciences
Les Ulis
HESS Collaboration
1
--
--
--
Discovery of variable VHE gamma-ray emission from the binary system 1FGL J1018.6-5856
Re-observations with the HESS telescope array of the very high-energy (VHE) source HESS J1018-589A that is coincident with the Fermi-LAT gamma-ray binary 1FGL J1018.6-5856 have resulted in a source detection significance of more than 9 sigma and the detection of variability (chi(2)/nu of 238.3/155) in the emitted gamma-ray flux. This variability confirms the association of HESS J1018-589A with the high-energy gamma-ray binary detected Fermi-LAT and also confirms the point-like source as a new VHE binary system. The spectrum of HESS J1018-589A is best fit with a power-law function with photon index Gamma = 2.20 +/- 0.14(stat) +/- 0.2(sys). Emission is detected up to similar to 20 TeV. The mean differential flux level is (2.9 +/- 0.4) x 10(-13) TeV-1 cm(-2) s(-1) at 1 TeV, equivalent to similar to 1% of the flux from the Crab Nebula at the same energy. Variability is clearly detected the night-by-night light curve. When folded on the orbital period of 16.58 days, the rebinned light curve peaks in phase with the observed X-ray high-energy phaseograms. The fit of the HESS phaseogram to a constant flux provides evidence of periodicity at the level of N-sigma > 3 sigma. The of the VHE phaseogram and measured spectrum suggest a low-inclination, low-eccentricity system with a modest impact from VHE gamma-ray due to pair production (tau less than or similar to 1 at 300 GeV).
Astronomy and astrophysics : an international weekly journal
10.1051/0004-6361/201525699
0004-6361
1432-0746
wos:2015
A131
WOS:000357345900083
Wilhelmi, ED (reprint author), CSIC, Inst Ciencies Espai IEEC, Fac Ciencies, Campus UAB,Torre C5,Parell,2a Planta, Barcelona 08193, Spain., emma@mpi-hd.mpg.de; yictor.zabalza@le.ac.uk
German Ministry for Education and Research (BMBF); Max Planck Society,
the Max Planck Society, the German Research Foundation (DFG); German
Research Foundation (DFG); French Ministry for Research; CNRS-IN2P3;
Astroparticle Interdisciplinary Programme of the CNRS; UK Science and
Technology Facilities Council (STFC); IPNP of the Charles University;
Czech Science Foundation; Polish Ministry of Science and Higher
Education; South African Department of Science and Technology; National
Research Foundation; University of Namibia
Attila Abramowski
Felix A. Aharonian
Faical Ait Benkhali
A. G. Akhperjanian
Ekrem Oǧuzhan Angüner
Michael Backes
Arnim Balzer
Yvonne Becherini
J. Becker Tjus
David Berge
Sabrina Bernhard
K. Bernlöhr
E. Birsin
R. Blackwell
Markus Boettcher
Catherine Boisson
J. Bolmont
Pol Bordas
Johan Bregeon
Francois Brun
Pierre Brun
Mark Bryan
Tomasz Bulik
John Carr
Sabrina Casanova
N. Chakraborty
R. Chalme-Calvet
Ryan C. G. Chaves
Andrew Chen
M. Chretien
Sergio Colafrancesco
Gabriele Cologna
Jan Conrad
C. Couturier
Y. Cui
I. D. Davids
B. Degrange
C. Deil
P. deWilt
A. Djannati-Ataï
W. Domainko
A. Donath
G. Dubus
K. Dutson
J. Dyks
M. Dyrda
T. Edwards
Kathrin Egberts
P. Eger
J. -P. Ernenwein
P. Espigat
C. Farnier
S. Fegan
F. Feinstein
M. V. Fernandesl
D. Fernandez
A. Fiasson
G. Fontaine
A. Foerster
M. Fuessling
S. Gabici
M. Gajdus
Y. A. Gallant
T. Garrigoux
G. Giavitto
B. Giebels
J. F. Glicenstein
D. Gottschall
A. Goyal
M. -H. Grondin
M. Grudzinska
D. Hadasch
S. Haeffner
J. Hahn
J. Hawkes
G. Heinzelmann
G. Henri
G. Hermann
O. Hervet
A. Hillert
James Anthony Hinton
W. Hofmann
P. Hofverberg
Clemens Hoischen
M. Holler
D. Horns
A. Ivascenko
A. Jacholkowska
C. Jahn
M. Jamrozy
M. Janiak
F. Jankowsky
I. Jung-Richardt
M. A. Kastendieckl
K. Katarzynski
U. Katz
D. Kerszberg
B. Khelifi
M. Kieffer
S. Klepser
D. Klochkov
W. Kluzniak
D. Kolitzus
Nu. Komin
K. Kosack
S. Krakau
F. Krayzel
P. P. Krueger
H. Laffon
G. Lamanna
J. Lau
J. Lefaucheur
V. Lefranc
A. Lemiere
M. Lemoine-Goumard
J. -P. Lenain
T. Lohse
A. Lopatin
C. -C. Lu
R. Lui
V. Marandon
A. Marcowith
C. Mariaud
R. Marx
G. Maurin
N. Maxted
M. Mayer
P. J. Meintjes
U. Menzler
M. Meyer
A. M. W. Mitchell
R. Moderski
M. Mohamed
K. Mora
E. Moulin
T. Murach
M. de Naurois
J. Niemiec
L. Oakes
H. Odaka
S. Oettl
S. Ohm
E. de Ona Wilhelmi
B. Opitz
M. Ostrowski
I. Oya
M. Panter
R. D. Parsons
M. Paz Arribas
N. W. Pekeur
G. Pelletier
P. -O. Petrucci
B. Peyaud
S. Pita
H. Poon
H. Prokoph
G. Puehlhofer
M. Punch
A. Quirrenbach
S. Raab
I. Reichardt
A. Reimer
O. Reimer
M. Renaud
R. de los Reyes
F. Rieger
C. Romoli
S. Rosier-Lees
G. Rowell
B. Rudak
C. B. Rulten
V. Sahakian
D. Salek
David M. Sanchez
A. Santangelo
M. Sasaki
R. Schlickeiser
F. Schuessler
A. Schulz
U. Schwanke
S. Schwemmer
A. S. Seyffert
R. Simoni
H. Sol
F. Spanier
G. Spengler
F. Spies
L. Stawarz
R. Steenkamp
Christian Stegmann
F. Stinzing
K. Stycz
Iurii Sushch
J. -P. Tavernet
T. Tavernier
A. M. Taylor
R. Terrier
M. Tluczykont
C. Trichard
K. Valerius
J. van der Walt
C. van Eldik
B. van Soelen
G. Vasileiadis
J. Veh
C. Venter
A. Viana
P. Vincent
J. Vink
F. Voisin
H. J. Voelk
T. Vuillaume
S. J. Wagner
P. Wagner
R. M. Wagner
M. Weidinger
Q. Weitzel
R. White
A. Wierzcholska
P. Willmann
A. Woernlein
D. Wouters
R. Yang
V. Zabalza
D. Zaborov
M. Zacharias
A. A. Zdziarski
Alraune Zech
F. Zefi
N. Zywucka
eng
uncontrolled
gamma rays: stars
eng
uncontrolled
stars: individual: 1FGL J1018.6-5856
eng
uncontrolled
radiation mechanisms: non-thermal
eng
uncontrolled
acceleration of particles
eng
uncontrolled
X-rays: binaries
Institut für Physik und Astronomie
Referiert
45503
2016
2016
eng
476
+
14
531
article
Nature Publ. Group
London
HESS Collaboration
1
--
--
--
Acceleration of petaelectronvolt protons in the Galactic Centre
Galactic cosmic rays reach energies of at least a few petaelectronvolts (of the order of 1015 electronvolts). This implies that our Galaxy contains petaelectronvolt accelerators (‘PeVatrons’), but all proposed models of Galactic cosmic-ray accelerators encounter difficulties at exactly these energies. Dozens of Galactic accelerators capable of accelerating particles to energies of tens of teraelectronvolts (of the order of 1013 electronvolts) were inferred from recent γ-ray observations3. However, none of the currently known accelerators—not even the handful of shell-type supernova remnants commonly believed to supply most Galactic cosmic rays—has shown the characteristic tracers of petaelectronvolt particles, namely, power-law spectra of γ-rays extending without a cut-off or a spectral break to tens of teraelectronvolts4. Here we report deep γ-ray observations with arcminute angular resolution of the region surrounding the Galactic Centre, which show the expected tracer of the presence of petaelectronvolt protons within the central 10 parsecs of the Galaxy. We propose that the supermassive black hole Sagittarius A* is linked to this PeVatron. Sagittarius A* went through active phases in the past, as demonstrated by X-ray outbursts5and an outflow from the Galactic Centre6. Although its current rate of particle acceleration is not sufficient to provide a substantial contribution to Galactic cosmic rays, Sagittarius A* could have plausibly been more active over the last 106–107 years, and therefore should be considered as a viable alternative to supernova remnants as a source of petaelectronvolt Galactic cosmic rays.
Nature : the international weekly journal of science
10.1038/nature17147
0028-0836
1476-4687
wos2016:2019
WOS:000372701300034
Abramowski, A (reprint author), Univ Hamburg, Inst Expt Phys, Luruper Chaussee 149, D-22761 Hamburg, Germany., contact.hess@hess-experiment.eu
German Ministry for Education and Research (BMBF); Max Planck Society; German Research Foundation (DFG); French Ministry for Research; CNRS-IN2P3; Astroparticle Interdisciplinary Programme of the CNRS; UK Science and Technology Facilities Council (STFC); IPNP of the Charles University; Czech Science Foundation; Polish Ministry of Science and Higher Education; South African Department of Science and Technology; National Research Foundation; University of Namibia; EU FP7 Marie Curie grant [PIEF-GA-2012-332350]
importub
2020-03-22T19:05:02+00:00
filename=package.tar
b0ac94c2ed658dad86e5fd5cb79fb41c
Attila Abramowski
Felix A. Aharonian
Faical Ait Benkhali
A. G. Akhperjanian
Ekrem Oǧuzhan Angüner
Michael Backes
Arnim Balzer
Yvonne Becherini
J. Becker Tjus
David Berge
Sabrina Bernhard
K. Bernlöhr
E. Birsin
R. Blackwell
Markus Boettcher
Catherine Boisson
J. Bolmont
Pol Bordas
Johan Bregeon
Francois Brun
Pierre Brun
Mark Bryan
Tomasz Bulik
John Carr
Sabrina Casanova
N. Chakraborty
R. Chalme-Calvet
Ryan C. G. Chaves
Andrew Chen
M. Chretien
Sergio Colafrancesco
Gabriele Cologna
Jan Conrad
C. Couturier
Y. Cui
I. D. Davids
B. Degrange
C. Deil
P. deWilt
A. Djannati-Ata
W. Domainko
A. Donath
G. Dubus
K. Dutson
J. Dyks
M. Dyrda
T. Edwards
Kathrin Egberts
P. Eger
J-P. Ernenwein
P. Espigat
C. Farnier
S. Fegan
F. Feinstein
M. V. Fernandes
D. Fernandez
A. Fiasson
G. Fontaine
A. Foerster
M. Fuessling
S. Gabici
M. Gajdus
Y. A. Gallant
T. Garrigoux
G. Giavitto
B. Giebels
J. F. Glicenstein
D. Gottschall
A. Goyal
M-H. Grondin
M. Grudzinska
D. Hadasch
S. Haeffner
J. Hahn
J. Hawkes
G. Heinzelmann
G. Henri
G. Hermann
O. Hervet
A. Hillert
James Anthony Hinton
W. Hofmann
P. Hofverberg
Clemens Hoischen
M. Holler
D. Horns
A. Ivascenko
A. Jacholkowska
M. Jamrozy
M. Janiak
F. Jankowsky
I. Jung-Richardt
M. A. Kastendieck
K. Katarzynski
U. Katz
D. Kerszberg
B. Khelifi
M. Kieffer
S. Klepser
D. Klochkov
W. Kluzniak
D. Kolitzus
Nu. Komin
K. Kosack
S. Krakau
F. Krayzel
P. P. Krueger
H. Laffon
G. Lamanna
J. Lau
J. Lefaucheur
V. Lefranc
A. Lemiere
M. Lemoine-Goumard
J-P. Lenain
T. Lohse
A. Lopatin
C-C. Lu
R. Lui
V. Marandon
A. Marcowith
C. Mariaud
R. Marx
G. Maurin
N. Maxted
M. Mayer
P. J. Meintjes
U. Menzler
M. Meyer
A. M. W. Mitchell
R. Moderski
M. Mohamed
K. Mora
E. Moulin
T. Murach
M. de Naurois
J. Niemiec
L. Oakes
H. Odaka
S. Oettl
S. Ohm
B. Opitz
M. Ostrowski
I. Oya
M. Panter
R. D. Parsons
M. Paz Arribas
N. W. Pekeur
G. Pelletier
P-O. Petrucci
B. Peyaud
S. Pita
H. Poon
H. Prokoph
G. Puehlhofer
M. Punch
A. Quirrenbach
S. Raab
I. Reichardt
A. Reimer
O. Reimer
M. Renaud
R. de los Reyes
F. Rieger
C. Romoli
S. Rosier-Lees
G. Rowell
B. Rudak
C. B. Rulten
V. Sahakian
D. Salek
David M. Sanchez
A. Santangelo
M. Sasaki
R. Schlickeiser
F. Schuessler
A. Schulz
U. Schwanke
S. Schwemmer
A. S. Seyffert
R. Simoni
H. Sol
F. Spanier
G. Spengler
F. Spies
L. Stawarz
R. Steenkamp
Christian Stegmann
F. Stinzing
K. Stycz
Iurii Sushch
J-P. Tavernet
T. Tavernier
A. M. Taylor
R. Terrier
M. Tluczykont
C. Trichard
R. Tuffs
K. Valerius
J. van der Walt
C. van Eldik
B. van Soelen
G. Vasileiadis
J. Veh
C. Venter
A. Viana
P. Vincent
J. Vink
F. Voisin
H. J. Voelk
T. Vuillaume
S. J. Wagner
P. Wagner
R. M. Wagner
M. Weidinger
Q. Weitzel
R. White
A. Wierzcholska
P. Willmann
A. Woernlein
D. Wouters
R. Yang
V. Zabalza
D. Zaborov
M. Zacharias
A. A. Zdziarski
Alraune Zech
F. Zefi
N. Zywucka
Institut für Physik und Astronomie
Referiert
Import
37410
2014
2014
eng
10
571
article
EDP Sciences
Les Ulis
HESSS Collaboration
1
--
--
--
Long-term monitoring of PKS2155-304 with ATOM and HESS:investigation of optical/gamma-ray correlations in different spectral states
In this paper we report on the analysis of all the available optical and very high-energy gamma-ray (> 200 GeV) data for the BL Lac object PKS 2155-304, collected simultaneously with the ATOM and H.E.S.S. telescopes from 2007 until 2009. This study also includes X-ray (RXTE, Swift) and high-energy gamma-ray (Fermi-LAT) data. During the period analysed, the source was transitioning from its flaring to quiescent optical states, and was characterized by only moderate flux changes at different wavelengths on the timescales of days and months. A flattening of the optical continuum with an increasing optical flux can be noted in the collected dataset, but only occasionally and only at higher flux levels. We did not find any universal relation between the very high-energy gamma-ray and optical flux changes on the timescales from days and weeks up to several years. On the other hand, we noted that at higher flux levels the source can follow two distinct tracks in the optical flux-colour diagrams, which seem to be related to distinct gamma-ray states of the blazar. The obtained results therefore indicate a complex scaling between the optical and gamma-ray emission of PKS 2155 304, with different correlation patterns holding at different epochs, and a gamma-ray flux depending on the combination of an optical flux and colour rather than a flux alone.
Astronomy and astrophysics : an international weekly journal
10.1051/0004-6361/201424142
0004-6361
1432-0746
wos:2014
A39
WOS:000345282600058
Abramowski, A (reprint author), Univ Hamburg, Inst Expt Phys, Luruper Chaussee 149, D-22761 Hamburg, Germany.
German Ministry for Education and Research (BMBF); Max Planck Society;
French Ministry for Research; CNRS-IN2P3; Astroparticle
Interdisciplinary Programme of the CNRS; U.K. Science and Technology
Facilities Council (STFC); IPNP of the Charles University; Czech Science
Foundation; Polish Ministry of Science and Higher Education; South
African Department of Science and Technology; National Research
Foundation; University of Namibia; National Science Center
[2011/03/N/ST9/01867]
Attila Abramowski
Felix A. Aharonian
Faical Ait Benkhali
A. G. Akhperjanian
Ekrem Oǧuzhan Angüner
Michael Backes
Shangkari Balenderan
Arnim Balzer
Anna Barnacka
Yvonne Becherini
J. Becker Tjus
David Berge
Sabrina Bernhard
K. Bernlöhr
E. Birsin
Jonathan Biteau
Markus Böttcher
Catherine Boisson
J. Bolmont
Pol Bordas
Johan Bregeon
Francois Brun
Pierre Brun
Mark Bryan
Tomasz Bulik
Svenja Carrigan
Sabrina Casanova
Paula M. Chadwick
N. Chakraborty
R. Chalme-Calvet
Ryan C. G. Chaves
M. Chretien
Sergio Colafrancesco
Gabriele Cologna
Jan Conrad
C. Couturier
Y. Cui
M. Dalton
I. D. Davids
B. Degrange
C. Deil
P. dewilt
A. Djannati-Ataï
W. Domainko
A. Donath
G. Dubus
K. Dutson
J. Dyks
M. Dyrda
T. Edwards
Kathrin Egberts
P. Eger
P. Espigat
C. Farnier
S. Fegan
F. Feinstein
M. V. Fernandes
D. Fernandez
A. Fiasson
G. Fontaine
A. Forster
M. Fuling
S. Gabici
M. Gajdus
Y. A. Gallant
T. Garrigoux
G. Giavitto
B. Giebels
J. F. Glicenstein
D. Gottschall
M. -H. Grondin
M. Grudzinska
D. Hadsch
S. Haeffner
J. Hahn
J. Harris
G. Heinzelmann
G. Henri
G. Hermann
O. Hervet
A. Hillert
James Anthony Hinton
W. Hofmann
P. Hofverberg
Markus Holler
D. Horns
A. Ivascenko
A. Jacholkowska
C. Jahn
M. Jamrozy
M. Janiak
F. Jankowsky
I. Jung
M. A. Kastendieck
K. Katarzynski
U. Katz
S. Kaufmann
B. Khelifi
M. Kiefeer
S. Klepser
D. Klochkov
W. Kluzniak
D. Kolitzus
Nu. Komin
K. Kosack
S. Krakau
F. Krayzel
P. P. Kruger
H. Laffon
G. Lamanna
J. Lefaucheur
V. Lefranc
A. Lemiere
M. Lemoine-Goumard
J. -P. Lenain
T. Lohse
A. Lopatin
C. -C. Lu
V. Marandon
A. Marcowith
R. Marx
G. Maurin
N. Maxted
M. Mayer
T. J. L. McComb
J. Mehault
P. J. Meintjes
U. Menzler
M. Meyer
A. M. W. Mitchell
R. Moderski
M. Mohamed
K. Mora
E. Moulin
T. Murach
M. de Naurois
J. Niemiec
S. J. Nolan
L. Oakes
H. Odaka
S. Ohm
B. Opitz
M. Ostrowski
I. Oya
M. Panter
R. D. Parsons
M. Paz Arribas
N. W. Pekeur
G. Pelletier
J. Perez
P. -O. Petrucci
B. Peyaud
S. Pita
H. Poon
G. Puhlhofer
M. Punch
A. Quirrenbach
S. Raab
I. Reichardt
A. Reimer
O. Reimer
M. Renaud
R. de los Reyes
F. Rieger
L. Rob
C. Romoli
S. Rosier-Lees
G. Rowell
B. Rudak
C. B. Rulten
V. Sahakian
D. Salek
David M. Sanchez
A. Santangelo
R. Schlickeiser
F. Schussler
A. Schulz
U. Schwanke
S. Schwarzburg
S. Schwemmer
H. Sol
F. Spanier
G. Spengler
F. Spies
L. Stawarz
R. Steenkamp
Christian Stegmann
F. Stinzing
K. Stycz
Iurii Sushch
J. -P. Tavernet
T. Tavernier
A. M. Taylor
R. Terrier
M. Tluczykont
C. Trichard
K. Valerius
C. Van Eldik
B. Van Soelen
G. Vasileiadis
J. Veh
C. Venter
A. Viana
P. Vincent
J. Vink
H. J. Volk
F. Volpe
M. Vorster
T. Vuillaume
S. J. Wagner
P. Wagner
R. M. Wagner
M. Ward
M. Weidinger
Q. Weitzel
R. White
A. Wierzcholska
P. Willmann
A. Wornlein
D. Wouters
R. Yang
V. Zabalza
D. Zaborov
M. Zacharias
A. A. Zdziarski
Alraune Zech
H. -S. Zechlin
eng
uncontrolled
radiation mechanisms: non-thermal
eng
uncontrolled
galaxies: active
eng
uncontrolled
black hole physics
eng
uncontrolled
BL Lacertae objects: individual: PKS 2155-304
eng
uncontrolled
galaxies: jets
eng
uncontrolled
gamma rays: galaxies
Institut für Physik und Astronomie
Referiert
39196
2015
2015
eng
7
574
article
EDP Sciences
Les Ulis
HESS Collaboration
1
--
--
--
HESS detection of TeV emission from the interaction region between the supernova remnant G349.7+0.2 and a molecular cloud
G349.7+0.2 is a young Galactic supernova remnant (SNR) located at the distance of 11.5 kpc and observed across the entire electromagnetic spectrum from radio to high energy (HE; 0.1 GeV < E < 100 GeV) gamma-rays. Radio and infrared observations indicate that the remnant is interacting with a molecular cloud. In this paper, the detection of very high energy (VHE, E > 100 GeV) gamma-ray emission coincident with this SNR with the High Energy Stereoscopic System (HESS.) is reported. This makes it one of the farthest Galactic SNR ever detected in this domain. An integral flux F(E > 400 GeV) = (6.5 +/- 1.1(stat) +/- 1.3(syst)) x 10-11 ph cm(-2) s(-1) corresponding to similar to 0.7% of that of the Crab Nebula and to a luminosity of similar to 10(34) erg s(-1) above the same energy threshold, and a steep photon index Gamma(VHE) = 2.8 +/- 0.27(stat) +/- 0.20(syst) are measured. The analysis of more than 5 yr of Fermi-LAT data towards this source shows a power-law like spectrum with a best-fit photon index Gamma(HE) = 2.2 +/- 0.04.2(stat-0.31sys)(+0.13), The combined gamma-ray spectrum of 0349.7+0.2 can be described by either a broken power law (I3PL) or a power law with exponential (or sub exponential) cutoff (PLC). In the former case, the photon break energy is found at E-br,E-gamma = 551(-30)(+70) GeV, slightly higher than what is usually observed in the HE/VHE gamma-ray emitting middle-aged SNRs known to be interacting with molecular clouds. In the latter case. the exponential (respectively sub-exponential) cutoff energy is measured at E-cat,E-gamma = 1.4(-0.55)(+1.6) (respectively 0.35(-0.21)(+0.75)) TeV. A pion decay process resulting from the interaction of the accelerated protons and nuclei with the dense surrounding medium is clearly the preferred scenario to explain the gamma-ray emission. The BPL with a spectral steepening of 0.5-1 and the PLC provide equally good fits to the data. The product or the average gas density and the total energy content of accelerated protons and nuclei amounts to nu W-p similar to 5 x 10(51) erg cm(-3)
Astronomy and astrophysics : an international weekly journal
10.1051/0004-6361/201425070
0004-6361
1432-0746
wos:2015
A100
WOS:000349467000100
Abramowski, A (reprint author), Univ Hamburg, Inst Expt Phys, Luruper Chaussee 149, D-22761 Hamburg, Germany.
German Ministry for Education and Research (BMBF); Max Planck Society;
German Research Foundation (DFG); French Ministry for Research;
CNRS-IN2P3; Astroparticle Interdisciplinary Programme of the CNRS; U.K.
Science and Technology Facilities Council (STFC); IPNP of the Charles
University; Czech Science Foundation; Polish Ministry of Science and
Higher Education; South African Department of Science and Technology;
National Research Foundation; University of Namibia
Attila Abramowski
Felix A. Aharonian
Faical Ait Benkhali
A. G. Akhperjanian
Ekrem Oǧuzhan Angüner
Michael Backes
Shangkari Balenderan
Arnim Balzer
Anna Barnacka
Yvonne Becherini
J. Becker Tjus
David Berge
Sabrina Bernhard
K. Bernlöhr
E. Birsin
Jonathan Biteau
Markus Boettcher
Catherine Boisson
J. Bolmont
Pol Bordas
Johan Bregeon
Francois Brun
Pierre Brun
Mark Bryan
Tomasz Bulik
Svenja Carrigan
Sabrina Casanova
Paula M. Chadwick
N. Chatraborty
R. Chalme-Calvet
Ryan C. G. Chaves
M. Chretien
Sergio Colafrancesco
Gabriele Cologna
Jan Conrad
C. Couturier
Y. Cui
I. D. Davids
B. Degrange
C. Deil
P. deWilt
A. Djannati-Ataï
W. Domainko
A. Donath
G. Dubus
K. Dutson
J. Dyks
M. Dyrda
T. Edwards
Kathrin Egberts
P. Eger
P. Espigat
C. Farnier
S. Fegan
F. Feinstein
M. V. Fernandes
D. Fernandez
A. Fiasson
G. Fontaine
A. Foerster
M. Fuessling
S. Gabici
M. Gajdus
Y. A. Gallant
T. Garrigoux
G. Giavitto
B. Giebels
J. F. Glicenstein
D. Gottschall
M. -H. Grondin
M. Grudzinska
D. Hadasch
S. Haeffner
J. Hahn
J. Harris
G. Heinzelmann
G. Henri
G. Hermann
O. Hervet
A. Hillert
James Anthony Hinton
W. Hofmann
P. Hofverberg
Markus Holler
D. Horns
A. Ivascenko
A. Jacholkowska
C. Jahn
M. Jamrozy
M. Janiak
F. Jankowsky
O. Jung-Richardt
M. A. Kastendieck
K. Katarzynski
U. Katz
S. Kaufmann
B. Khelifi
M. Kieffer
S. Klepser
D. Klochkov
W. Kluzniak
D. Kolitzus
Nu Komin
K. Kosack
S. Krakau
F. Krayzel
P. P. Krueger
H. Laffon
G. Lamanna
J. Lefaucheur
V. Lefranc
A. Lemiere
M. Lemoine-Goumard
J. P. Lenain
T. Lohse
A. Lopatin
C-C Lu
V. Marandon
A. Marcowith
R. Marx
G. Maurin
N. Maxted
Markus Mayer
T. J. L. McComb
J. Mehault
P. J. Meintjes
U. Menzler
M. Meyer
A. M. W. Mitchell
R. Moderski
M. Mohamed
K. Mora
E. Moulin
T. Murach
M. de Naurois
J. Niemiec
S. J. Nolan
L. Oakes
H. Odaka
S. Ohm
B. Opitz
M. Ostrowski
I. Oya
M. Panter
R. D. Parsons
M. Paz Anibas
N. W. Pekeur
G. Pelletier
P-O Petrucci
B. Peyaud
S. Pita
H. Poon
G. Puehlhofer
M. Punch
A. Quirrenbach
S. Raab
I. Reichardt
A. Reimer
O. Reimer
M. Renaud
R. de los Reyes
F. Rieger
C. Romoli
S. Rosier-Lees
G. Rowell
B. Rudak
C. B. Rulten
V. Sahakian
D. Salek
David M. Sanchez
A. Santangelo
R. Schlickeiser
F. Schuessler
A. Schulz
U. Schwanke
S. Schwarzburg
S. Schwemmer
H. Sol
F. Spanier
G. Spengler
F. Spies
L. Stawarz
R. Steenkamp
Christian Stegmann
F. Stinzing
K. Stycz
Iurii Sushch
J-P Tavernet
T. Tavernier
A. M. Taylor
R. Terrier
M. Tluczykont
C. Trichard
K. Valerius
C. van Eldik
B. van Soelen
G. Vasileiadis
J. Veh
C. Venter
A. Viana
P. Vincent
J. Vink
H. J. Voelk
F. Volpe
M. Vorster
T. Vuillaume
S. J. Wagner
P. Wagner
R. M. Wagner
M. Ward
M. Weidinger
Q. Weitzel
R. White
A. Wierzcholska
P. Willmann
A. Woernlein
D. Wouters
R. Yang
V. Zabalza
D. Zaborov
M. Zacharias
A. A. Zdziarski
Alraune Zech
H-S Zechlin
eng
uncontrolled
gamma rays: general
eng
uncontrolled
ISM: supernova remnants
eng
uncontrolled
ISM: clouds
Institut für Physik und Astronomie
Referiert
39113
2015
2015
eng
6
575
article
EDP Sciences
Les Ulis
HESS Collaboration
1
--
--
--
HESS reveals a lack of TeV emission from the supernova remnant Puppis A (Research Note)
Context. Puppis A is an interesting similar to 4 kyr-old supernova remnant (SNR) that shows strong evidence of interaction between the forward shock and a molecular cloud. It has been studied in detail from radio frequencies to high-energy (HE, 0.1-100 GeV) gamma-rays. An analysis of the Fermi-LAT data has shown extended HE gamma-ray emission with a 0.2-100 GeV spectrum exhibiting no significant deviation from a power law, unlike most of the GeV-emitting SNRs known to be interacting with molecular clouds. This makes it a promising target for imaging atmospheric Cherenkov telescopes (IACTs) to probe the gamma-ray emission above 100 GeV.
Aims. Very-high-energy (VHE, E >= 0.1 TeV) gamma-ray emission from Puppis A has been, for the first time, searched for with the High Energy Stereoscopic System (HESS.).
Methods. Stereoscopic imaging of Cherenkov radiation from extensive air showers is used to reconstruct the direction and energy of the incident gamma-rays in order to produce sky images and source spectra. The profile likelihood method is applied to find constraints on the existence of a potential break or cutoff in the photon spectrum.
Results. The analysis of the HESS. data does not reveal any significant emission towards Puppis A. The derived upper limits on the differential photon flux imply that its broadband gamma-ray spectrum must exhibit a spectral break or cutoff. By combining Fermi-LAT and HESS. measurements, the 99% confidence-level upper limits on such a cutoff are found to be 450 and 280 GeV, assuming a power law with a simple exponential and a sub-exponential cutoff, respectively. It is concluded that none of the standard limitations (age, size, radiative losses) on the particle acceleration mechanism, assumed to be continuing at present, can explain the lack of VHE signal. The scenario in which particle acceleration has ceased some time ago is considered as an alternative explanation. The HE/VHE spectrum of Puppis A could then exhibit a break of non-radiative origin (as observed in several other interacting SNRs, albeit at somewhat higher energies), owing to the interaction with dense and neutral material, in particular towards the NE region.
Astronomy and astrophysics : an international weekly journal
10.1051/0004-6361/2014424805
0004-6361
1432-0746
wos:2015
A81
WOS:000350249100081
Fernandez, D (reprint author), Univ Montpellier 2, CNRS, IN2P3, Lab Univers & Particules Montpellier, CC 72,Pl Eugene Bataillon, F-34095 Montpellier 5, France., diane.fernandez@lupmuniv-montp2.fr; igor.oya.vallejo@desy..de
German Ministry for Education and Research (BMBF); Max Planck Society;
German Research Foundation (DFG); French Ministry for Research;
CNRS-IN2P3; Astroparticle Interdisciplinary Programme of the CNRS; UK
Science and Technology Facilities Council (STFC); IPNP of the Charles
University; Czech Science Foundation; Polish Ministry of Science and
Higher Education; South African Department of Science and Technology;
National Research Foundation; University of Namibia
Attila Abramowski
Felix A. Aharonian
Faical Ait Benkhali
A. G. Akhperjanian
Ekrem Oǧuzhan Angüner
Michael Backes
Shangkari Balenderan
Arnim Balzer
Anna Barnacka
Yvonne Becherini
J. Becker Tjus
David Berge
Sabrina Bernhard
K. Bernlöhr
E. Birsin
Jonathan Biteau
Markus Boettcher
Catherine Boisson
J. Bolmont
Pol Bordas
Johan Bregeon
Francois Brun
Pierre Brun
Mark Bryan
Tomasz Bulik
Svenja Carrigan
Sabrina Casanova
Paula M. Chadwick
N. Chakraborty
R. Chalme-Calvet
Ryan C. G. Chaves
M. Chretien
Sergio Colafrancesco
Gabriele Cologna
Jan Conrad
C. Couturier
Y. Cui
I. D. Davids
B. Degrange
C. Deil
P. deWilt
A. Djannati-Ataï
W. Domainko
A. Donath
G. Dubus
K. Dutson
J. Dyks
M. Dyrda
T. Edwards
Kathrin Egberts
P. Eger
P. Espigat
C. Farnier
S. Fegan
F. Feinstein
M. V. Fernandes
D. Fernandez
A. Fiasson
G. Fontaine
A. Foerster
Matthias Füssling
S. Gabici
M. Gajdus
Y. A. Gallant
T. Garrigoux
G. Giavitto
B. Giebels
J. F. Glicenstein
D. Gottschall
M. -H. Grondin
M. Grudzinska
D. Hadasch
S. Haeffner
J. Hahn
J. Harris
G. Heinzelmann
G. Henri
G. Hermann
O. Hervet
A. Hillert
James Anthony Hinton
W. Hofmann
P. Hofverberg
Maraike Holler
D. Horns
A. Ivascenko
A. Jacholkowska
C. Jahn
M. Jamrozy
M. Janiak
F. Jankowsky
I. Jung-Richardt
M. A. Kastendieck
K. Katarzynski
U. Katz
S. Kaufmann
B. Khelifi
M. Kieffer
S. Klepser
D. Klochkov
W. Kluzniak
D. Kolitzus
Nu. Komin
K. Kosack
S. Krakau
F. Krayzel
P. P. Krueger
H. Laffon
G. Lamanna
J. Lefaucheur
V. Lefranc
A. Lemiere
M. Lemoine-Goumard
J. -P. Lenain
T. Lohse
A. Lopatin
C. -C. Lu
V. Marandon
A. Marcowith
R. Marx
G. Maurin
N. Maxted
Michael Mayer
T. J. L. McComb
J. Mehault
P. J. Meintjes
U. Menzler
M. Meyer
A. M. W. Mitchell
R. Moderski
M. Mohamed
K. Mora
E. Moulin
T. Murach
M. de Naurois
J. Niemiec
S. J. Nolan
L. Oakes
H. Odaka
S. Ohm
B. Opitz
M. Ostrowski
I. Oya
M. Panter
R. D. Parsons
M. Paz Arribas
N. W. Pekeur
G. Pelletier
P. -O Petrucci
B. Peyaud
S. Pita
H. Poon
G. Puehlhofer
M. Punch
A. Quirrenbach
S. Raab
I. Reichardt
A. Reimer
O. Reimer
M. Renaud
R. de los Reyes
F. Rieger
C. Romoli
S. Rosier-Lees
G. Rowell
B. Rudak
C. B. Rulten
V. Sahakian
D. Salek
David M. Sanchez
A. Santangelo
R. Schlickeiser
F. Schuessler
A. Schulz
U. Schwanke
S. Schwarzburg
S. Schwemmer
H. Sol
F. Spanier
G. Spengler
F. Spies
L. Stawarz
R. Steenkamp
Christian Stegmann
F. Stinzing
K. Stycz
Iurii Sushch
J. -P. Tavernet
T. Tavernier
A. M. Taylor
R. Terrier
M. Tluczykont
C. Trichard
K. Valerius
C. van Eldik
B. van Soelen
G. Vasileiadis
J. Veh
C. Venter
A. Viana
P. Vincent
J. Vink
H. J. Voelk
F. Volpe
M. Vorster
T. Vuillaume
S. J. Wagner
P. Wagner
R. M. Wagner
M. Ward
M. Weidinger
Q. Weitzel
R. White
A. Wierzcholska
P. Willmann
A. Woernlein
D. Wouters
R. Yang
V. Zabalza
D. Zaborov
M. Zacharias
A. A. Zdziarski
Alraune Zech
H. -S. Zechlin
eng
uncontrolled
gamma rays: ISM
eng
uncontrolled
ISM: individual objects: Puppis A
eng
uncontrolled
radiation mechanisms: non-thermal
eng
uncontrolled
cosmic rays
eng
uncontrolled
acceleration of particles
Institut für Physik und Astronomie
Referiert
39148
2015
2015
eng
6
8
114
article
American Physical Society
College Park
HESS Collaboration
1
--
--
--
Constraints on an Annihilation Signal from a Core of Constant Dark Matter Density around the Milky Way Center with HESS
An annihilation signal of dark matter is searched for from the central region of the Milky Way. Data acquired in dedicated on-off observations of the Galactic center region with H.E.S.S. are analyzed for this purpose. No significant signal is found in a total of similar to 9 h of on-off observations. Upper limits on the velocity averaged cross section, <sigma upsilon >, for the annihilation of dark matter particles with masses in the range of similar to 300 GeV to similar to 10 TeV are derived. In contrast to previous constraints derived from observations of the Galactic center region, the constraints that are derived here apply also under the assumption of a central core of constant dark matter density around the center of the Galaxy. Values of <sigma upsilon > that are larger than 3 x 10(-24) cm(3)/s are excluded for dark matter particles with masses between similar to 1 and similar to 4 TeV at 95% C.L. if the radius of the central dark matter density core does not exceed 500 pc. This is the strongest constraint that is derived on <sigma upsilon > for annihilating TeV mass dark matter without the assumption of a centrally cusped dark matter density distribution in the search region.
Physical review letters
10.1103/PhysRevLett.114.081301
25768750
0031-9007
1079-7114
wos:2015
081301
WOS:000350107800003
Abramowski, A (reprint author), Univ Hamburg, Inst Expt Phys, Luruper Chaussee 149, D-22761 Hamburg, Germany.
German Ministry of Education and Research (BMBF); Max Planck Society;
French Ministry of Research; CNRS-IN2P3; Astroparticle Interdisciplinary
Programme of the CNRS; United Kingdom Particle Physics and Astronomy
Research Council (PPARC); IPNP of the Charles University; South African
Department of Science and Technology; National Research Foundation;
University of Namibia; European Community [ERC-StG-259391]
Attila Abramowski
Felix A. Aharonian
Faical Ait Benkhali
A. G. Akhperjanian
Ekrem Oǧuzhan Angüner
Michael Backes
Shangkari Balenderan
Arnim Balzer
Anna Barnacka
Yvonne Becherini
J. Becker Tjus
David Berge
Sabrina Bernhard
K. Bernlöhr
E. Birsin
Jonathan Biteau
Markus Boettcher
Catherine Boisson
J. Bolmont
Pol Bordas
Johan Bregeon
Francois Brun
Pierre Brun
Mark Bryan
Tomasz Bulik
Svenja Carrigan
Sabrina Casanova
Paula M. Chadwick
N. Chakraborty
R. Chalme-Calvet
Ryan C. G. Chaves
M. Chretien
Sergio Colafrancesco
Gabriele Cologna
Jan Conrad
C. Couturier
Y. Cui
I. D. Davids
B. Degrange
C. Deil
P. deWilt
A. Djannati-Ataï
W. Domainko
A. Donath
G. Dubus
K. Dutson
J. Dyks
M. Dyrda
T. Edwards
Kathrin Egberts
P. Eger
P. Espigat
C. Farnier
S. Fegan
F. Feinstein
M. V. Fernandes
D. Fernandez
A. Fiasson
G. Fontaine
A. Foerster
M. Fuessling
S. Gabici
M. Gajdus
Y. A. Gallant
T. Garrigoux
G. Giavitto
B. Giebels
J. F. Glicenstein
D. Gottschall
M. -H. Grondin
M. Grudzinska
D. Hadasch
S. Haeffner
J. Hahn
J. Harris
G. Heinzelmann
G. Henri
G. Hermann
O. Hervet
A. Hillert
James Anthony Hinton
W. Hofmann
P. Hofverberg
Margitte Holler
D. Horns
A. Ivascenko
A. Jacholkowska
C. Jahn
M. Jamrozy
M. Janiak
F. Jankowsky
I. Jung-Richardt
M. A. Kastendieck
K. Katarzynski
U. Katz
S. Kaufmann
B. Khelifi
M. Kieffer
S. Klepser
D. Klochkov
W. Kluzniak
D. Kolitzus
Nu Komin
K. Kosack
S. Krakau
F. Krayzel
P. P. Krueger
H. Laffon
G. Lamanna
J. Lefaucheur
V. Lefranc
A. Lemiere
M. Lemoine-Goumard
J. -P. Lenain
T. Lohse
A. Lopatin
C. -C. Lu
V. Marandon
A. Marcowith
R. Marx
G. Maurin
N. Maxted
Michael Mayer
T. J. L. McComb
J. Mehault
P. J. Meintjes
U. Menzler
M. Meyer
A. M. W. Mitchell
R. Moderski
M. Mohamed
K. Mora
E. Moulin
T. Murach
M. de Naurois
J. Niemiec
S. J. Nolan
L. Oakes
H. Odaka
S. Ohm
B. Opitz
M. Ostrowski
I. Oya
M. Panter
R. D. Parsons
M. Paz Arribas
N. W. Pekeur
G. Pelletier
P. -O. Petrucci
B. Peyaud
S. Pita
H. Poon
G. Puehlhofer
M. Punch
A. Quirrenbach
S. Raab
I. Reichardt
A. Reimer
O. Reimer
M. Renaud
R. de los Reyes
F. Rieger
C. Romoli
S. Rosier-Lees
G. Rowell
B. Rudak
C. B. Rulten
V. Sahakian
D. Salek
David M. Sanchez
A. Santangelo
R. Schlickeiser
F. Schuessler
A. Schulz
U. Schwanke
S. Schwarzburg
S. Schwemmer
H. Sol
F. Spanier
G. Spengler
F. Spies
L. Stawarz
R. Steenkamp
Christian Stegmann
F. Stinzing
K. Stycz
Iurii Sushch
J. -P. Tavernet
T. Tavernier
A. M. Taylor
R. Terrier
M. Tluczykont
C. Trichard
K. Valerius
C. van Eldik
B. van Soelen
G. Vasileiadis
J. Veh
C. Venter
A. Viana
P. Vincent
J. Vink
H. J. Voelk
F. Volpe
M. Vorster
T. Vuillaume
S. J. Wagner
P. Wagner
R. M. Wagner
M. Ward
M. Weidinger
Q. Weitzel
R. White
A. Wierzcholska
P. Willmann
A. Woernlein
D. Wouters
R. Yang
V. Zabalza
D. Zaborov
M. Zacharias
A. A. Zdziarski
Alraune Zech
H. -S. Zechlin
Institut für Physik und Astronomie
Referiert
37284
2014
2014
eng
8
12
90
article
American Physical Society
College Park
HESS Collaboration
1
--
--
--
Diffuse Galactic gamma-ray emission with HESS
Diffuse gamma-ray emission is the most prominent observable signature of celestial cosmic-ray interactions at high energies. While already being investigated at GeVenergies over several decades, assessments of diffuse gamma-ray emission at TeVenergies remain sparse. After completion of the systematic survey of the inner Galaxy, the H.E.S.S. experiment is in a prime position to observe large-scale diffuse emission at TeVenergies. Data of the H.E.S.S. Galactic Plane Survey are investigated in regions off known gamma-ray sources. Corresponding gamma-ray flux measurements were made over an extensive grid of celestial locations. Longitudinal and latitudinal profiles of the observed gamma-ray fluxes show characteristic excess emission not attributable to known gamma-ray sources. For the first time large-scale gamma-ray emission along the Galactic plane using imaging atmospheric Cherenkov telescopes has been observed. While the background subtraction technique limits the ability to recover modest variation on the scale of the H.E.S.S. field of view or larger, which is characteristic of the inverse Compton scatter-induced Galactic diffuse emission, contributions of neutral pion decay as well as emission from unresolved gamma-ray sources can be recovered in the observed signal to a large fraction. Calculations show that the minimum gamma-ray emission from pi(0) decay represents a significant contribution to the total signal. This detection is interpreted as a mix of diffuse Galactic gamma-ray emission and unresolved sources.
Physical review : D, Particles, fields, gravitation, and cosmology
10.1103/PhysRevD.90.122007
1550-7998
1550-2368
wos:2014
122007
WOS:000347194400004
Egberts, K (reprint author), Univ Potsdam, Inst Phys & Astron, Karl Liebknecht Str 24-25, D-14476 Golm, Germany., Kathrin.Egberts@uni-potsdam.de; Olaf.Reimer@uibk.ac.at
Namibian authorities; German Ministry for Education and Research (BMBF);
Max Planck Society; German Research Foundation (DFG); French Ministry
for Research; CNRS-IN2P3; Astroparticle Interdisciplinary Programme of
the CNRS; U.K. Science and Technology Facilities Council (STFC); IPNP of
the Charles University; Czech Science Foundation; Polish Ministry of
Science and Higher Education; South African Department of Science and
Technology; National Research Foundation; University of Namibia;
European Community [ERC-StG-259391]; Knut and Alice Wallenberg
Foundation
Attila Abramowski
Felix A. Aharonian
Faical Ait Benkhali
A. G. Akhperjanian
Ekrem Oǧuzhan Angüner
Michael Backes
Shangkari Balenderan
Arnim Balzer
Anna Barnacka
Yvonne Becherini
J. Becker Tjus
David Berge
Sabrina Bernhard
K. Bernlöhr
E. Birsin
Jonathan Biteau
Markus Boettcher
Catherine Boisson
J. Bolmont
Pol Bordas
Johan Bregeon
Francois Brun
Pierre Brun
Mark Bryan
Tomasz Bulik
Svenja Carrigan
Sabrina Casanova
Paula M. Chadwick
N. Chakraborty
R. Chalme-Calvet
Ryan C. G. Chaves
M. Chretien
Sergio Colafrancesco
Gabriele Cologna
Jan Conrad
C. Couturier
Y. Cui
I. D. Davids
B. Degrange
C. Deil
P. dewilt
A. Djannati-Ataï
W. Domainko
A. Donath
G. Dubus
K. Dutson
J. Dyks
M. Dyrda
T. Edwards
Kathrin Egberts
P. Eger
P. Espigat
C. Farnier
S. Fegan
F. Feinstein
M. V. Fernandes
D. Fernandez
A. Fiasson
G. Fontaine
A. Foerster
M. Fuessling
S. Gabici
M. Gajdus
Y. A. Gallant
T. Garrigoux
G. Giavitto
B. Giebels
J. F. Glicenstein
D. Gottschall
M. -H. Grondin
M. Grudzinska
D. Hadasch
S. Haeffner
J. Hahn
J. Harris
G. Heinzelmann
G. Henri
G. Hermann
O. Hervet
A. Hillert
James Anthony Hinton
W. Hofmann
P. Hofverberg
M. Holler
D. Horns
A. Ivascenko
A. Jacholkowska
C. Jahn
Marek Jamrozy
M. Janiak
F. Jankowsky
I. Jung-Richardt
M. A. Kastendieck
Krzysztof Katarzynski
Uli Katz
S. Kaufmann
B. Khelifi
M. Kieffer
S. Klepser
D. Klochkov
W. Kluzniak
D. Kolitzus
Nu. Komin
K. Kosack
S. Krakau
F. Krayzel
P. P. Krueger
H. Laffon
G. Lamanna
J. Lefaucheur
V. Lefranc
A. Lemiere
M. Lemoine-Goumard
J. -P. Lenain
T. Lohse
A. Lopatin
C. -C. Lu
V. Marandon
A. Marcowith
R. Marx
G. Maurin
N. Maxted
M. Mayer
T. J. L. McComb
J. Mehault
P. J. Meintjes
U. Menzler
M. Meyer
A. M. W. Mitchell
R. Moderski
M. Mohamed
K. Mora
E. Moulin
T. Murach
M. de Naurois
J. Niemiec
S. J. Nolan
L. Oakes
H. Odaka
S. Ohm
B. Opitz
M. Ostrowski
I. Oya
M. Panter
R. D. Parsons
M. Paz Arribas
N. W. Pekeur
G. Pelletier
P. -O. Petrucci
B. Peyaud
S. Pita
H. Poon
G. Puehlhofer
Michael Punch
A. Quirrenbach
S. Raab
I. Reichardt
A. Reimer
Olaf Reimer
M. Renaud
R. de los Reyes
F. Rieger
C. Romoli
S. Rosier-Lees
G. Rowell
B. Rudak
C. B. Rulten
V. Sahakian
D. Salek
David M. Sanchez
A. Santangelo
R. Schlickeiser
Fabian Schuessler
A. Schulz
U. Schwanke
S. Schwarzburg
S. Schwemmer
H. Sol
F. Spanier
G. Spengler
F. Spies
L. Stawarz
R. Steenkamp
Christian Stegmann
F. Stinzing
K. Stycz
Iurii Sushch
J. -P. Tavernet
T. Tavernier
A. M. Taylor
R. Terrier
M. Tluczykont
C. Trichard
K. Valerius
Christopher van Eldik
B. van Soelen
G. Vasileiadis
J. Veh
C. Venter
A. Viana
P. Vincent
J. Vink
H. J. Voelk
F. Volpe
M. Vorster
T. Vuillaume
S. J. Wagner
P. Wagner
R. M. Wagner
M. Ward
M. Weidinger
Q. Weitzel
R. White
A. Wierzcholska
P. Willmann
A. Woernlein
D. Wouters
R. Yang
V. Zabalza
D. Zaborov
M. Zacharias
A. A. Zdziarski
Alraune Zech
H. -S. Zechlin
Y. Fukui
Institut für Physik und Astronomie
Referiert
37285
2014
2014
eng
15
11
90
article
American Physical Society
College Park
HESS Collaboration
1
--
--
--
Search for dark matter annihilation signatures in HESS observations of
dwarf spheroidal galaxies
Dwarf spheroidal galaxies of the Local Group are close satellites of the Milky Way characterized by a large mass-to-light ratio and are not expected to be the site of nonthermal high-energy gamma-ray emission or intense star formation. Therefore they are among the most promising candidates for indirect dark matter searches. During the last years the High Energy Stereoscopic System (H.E.S.S.) of imaging atmospheric Cherenkov telescopes observed five of these dwarf galaxies for more than 140 hours in total, searching for TeV gamma-ray emission from annihilation of dark matter particles. The new results of the deep exposure of the Sagittarius dwarf spheroidal galaxy, the first observations of the Coma Berenices and Fornax dwarves and the reanalysis of two more dwarf spheroidal galaxies already published by the H.E.S.S. Collaboration, Carina and Sculptor, are presented. In the absence of a significant signal new constraints on the annihilation cross section applicable to weakly interacting massive particles (WIMPs) are derived by combining the observations of the five dwarf galaxies. The combined exclusion limit depends on the WIMP mass and the best constraint is reached at 1-2 TeV masses with a cross-section upper bound of similar to 3.9 x 10(-24) cm(3) s(-1) at a 95% confidence level.
Physical review : D, Particles, fields, gravitation, and cosmology
10.1103/PhysRevD.90.112012
1550-7998
1550-2368
wos:2014
112012
WOS:000347202900002
Abramowski, A (reprint author), Univ Hamburg, Inst Expt Phys, Luruper Chaussee 149, D-22761 Hamburg, Germany., emrah@physik.hu-berlin.de; Christian.Farnier@fysik.su.se; Giovanni.Lamanna@lapp.in2p3.fr
German Ministry for Education and Research (BMBF); Max Planck Society;
French Ministry for Research; CNRS-IN2P3; Astroparticle
Interdisciplinary Programme of the CNRS; U.K. Science and Technology
Facilities Council (STFC); IPNP of Charles University; Czech Science
Foundation; Polish Ministry of Science and Higher Education; South
African Department of Science and Technology; National Research
ENIGMASS; Knut and Alice Wallenberg foundation; European Community
[ERC-StG-259391]
Attila Abramowski
Felix A. Aharonian
Faical Ait Benkhali
A. G. Akhperjanian
Ekrem Oǧuzhan Angüner
Michael Backes
Shangkari Balenderan
Arnim Balzer
Anna Barnacka
Yvonne Becherini
J. Becker Tjus
David Berge
Sabrina Bernhard
K. Bernlöhr
E. Birsin
Jonathan Biteau
Markus Boettcher
Catherine Boisson
J. Bolmont
Pol Bordas
Johan Bregeon
Francois Brun
Pierre Brun
Mark Bryan
Tomasz Bulik
Svenja Carrigan
Sabrina Casanova
Paula M. Chadwick
N. Chakraborty
R. Chalme-Calvet
Ryan C. G. Chaves
M. Chretien
Sergio Colafrancesco
Gabriele Cologna
Jan Conrad
C. Couturier
Y. Cui
M. Dalton
I. D. Davids
B. Degrange
C. Deil
P. deWilt
A. Djannati-Ataï
W. Domainko
A. Donath
G. Dubus
K. Dutson
J. Dyks
M. Dyrda
T. Edwards
Kathrin Egberts
P. Eger
P. Espigat
C. Farnier
S. Fegan
F. Feinstein
M. V. Fernandes
D. Fernandez
A. Fiasson
G. Fontaine
A. Foerster
M. Fuessling
S. Gabici
M. Gajdus
Y. A. Gallant
T. Garrigoux
G. Giavitto
B. Giebels
J. F. Glicenstein
D. Gottschall
A. Goudelis
M. -H. Grondin
M. Grudzinska
D. Hadsch
S. Haeffner
J. Hahn
J. Harris
G. Heinzelmann
G. Henri
G. Hermann
O. Hervet
A. Hillert
James Anthony Hinton
W. Hofmann
P. Hofverberg
M. Holler
D. Horns
A. Ivascenko
A. Jacholkowska
C. Jahn
M. Jamrozy
M. Janiak
F. Jankowsky
I. Jung
M. A. Kastendieck
K. Katarzynski
U. Katz
S. Kaufmann
B. Khelifi
M. Kieffer
S. Klepser
D. Klochkov
W. Kluzniak
D. Kolitzus
Nu. Komin
K. Kosack
S. Krakau
F. Krayzel
P. P. Krueger
H. Laffon
G. Lamanna
J. Lefaucheur
V. Lefranc
A. Lemiere
M. Lemoine-Goumard
J. -P. Lenain
T. Lohse
A. Lopatin
C. -C. Lu
V. Marandon
A. Marcowith
R. Marx
G. Maurin
N. Maxted
M. Mayer
T. J. L. McComb
J. Mehault
P. J. Meintjes
U. Menzler
M. Meyer
A. M. W. Mitchell
R. Moderski
M. Mohamed
K. Mora
E. Moulin
T. Murach
M. de Naurois
J. Niemiec
S. J. Nolan
L. Oakes
H. Odaka
S. Ohm
B. Opitz
M. Ostrowski
I. Oya
M. Panter
R. D. Parsons
M. Paz Arribas
N. W. Pekeur
G. Pelletier
J. Perez
P. -O. Petrucci
B. Peyaud
S. Pita
H. Poon
G. Puehlhofer
M. Punch
A. Quirrenbach
S. Raab
I. Reichardt
A. Reimer
Olaf Reimer
M. Renaud
R. de los Reyes
F. Rieger
L. Rob
C. Romoli
S. Rosier-Lees
G. Rowell
B. Rudak
C. B. Rulten
V. Sahakian
D. Salek
David M. Sanchez
A. Santangelo
R. Schlickeiser
Fabian Schuessler
A. Schulz
U. Schwanke
S. Schwarzburg
S. Schwemmer
P. Serpico
H. Sol
F. Spanier
G. Spengler
F. Spiess
R. Steenkamp
Christian Stegmann
F. Stinzing
K. Stycz
Iurii Sushch
J. -P. Tavernet
T. Tavernier
A. M. Taylor
R. Terrier
M. Tluczykont
C. Trichard
K. Valerius
C. van Eldik
B. van Soelen
G. Vasileiadis
J. Veh
C. Venter
A. Viana
P. Vincent
J. Vink
H. J. Voelk
F. Volpe
M. Vorster
T. Vuillaume
S. J. Wagner
P. Wagner
R. M. Wagner
M. Ward
M. Weidinger
Q. Weitzel
R. White
A. Wierzcholska
P. Willmann
A. Woernlein
D. Wouters
R. Yang
V. Zabalza
D. Zaborov
M. Zacharias
A. A. Zdziarski
Alraune Zech
H. -S. Zechlin
Institut für Physik und Astronomie
Referiert
39080
2015
2015
eng
14
1
802
article
IOP Publ. Ltd.
Bristol
HESS Collaboration
1
--
--
--
The 2012 flare of PG 1553+113 seen with hess and Fermi-lat
Very high energy (VHE, E > 100 GeV)gamma-ray flaring activity of the high-frequency peaked BL Lac object PG 1553 + 113 has been detected by the H.E.S.S. telescopes. The flux of the source increased by a factor of 3 during the nights of 2012 April 26 and 27 with respect to the archival measurements with a hint of intra-night variability. No counterpart of this event has been detected in the Fermi-Large Area Telescope data. This pattern is consistent with VHE gamma(-)ray flaring being caused by the injection of ultrarelativistic particles, emitting.-rays at the highest energies. The dataset offers a unique opportunity to constrain the redshift of this source at z = 0.49 +/- 0.04 using a novel method based on Bayesian statistics. The indication of intra-night variability is used to introduce a novel method to probe for a possible Lorentz invariance violation (LIV), and to set limits on the energy scale at which Quantum Gravity (QG) effects causing LIV may arise. For the subluminal case, the derived limits are E-QG,E- 1 > 4.10 x 10(17) GeV and E-QG,E- 2 > 2.10 x 10(10) GeV for linear and quadratic LIV effects, respectively.
The astrophysical journal : an international review of spectroscopy and astronomical physics
10.1088/0004-637X/802/1/65
0004-637X
1538-4357
wos:2015
65
WOS:000351834700065
Abramowski, A (reprint author), Univ Hamburg, Inst Expt Phys, Luruper Chaussee 149, D-22761 Hamburg, Germany.
German Ministry for Education and Research (BMBF); Max Planck Society;
French Ministry for Research; CNRS-IN2P3; Astroparticle
Interdisciplinary Programme of the CNRS; UK Particle Physics and
Astronomy Research Council (PPARC); IPNP of the Charles University;
South African Department of Science and Technology; National Research
Foundation; University of Namibia
Attila Abramowski
Felix A. Aharonian
Faical Ait Benkhali
A. G. Akhperjanian
Ekrem Oǧuzhan Angüner
Michael Backes
Shangkari Balenderan
Arnim Balzer
Anna Barnacka
Yvonne Becherini
J. Becker Tjus
David Berge
Sabrina Bernhard
K. Bernlöhr
E. Birsin
Jonathan Biteau
Markus Boettcher
Catherine Boisson
J. Bolmont
Pol Bordas
Johan Bregeon
Francois Brun
Pierre Brun
Mark Bryan
Tomasz Bulik
Svenja Carrigan
Sabrina Casanova
Paula M. Chadwick
N. Chakraborty
R. Chalme-Calvet
Ryan C. G. Chaves
M. Chretien
Sergio Colafrancesco
Gabriele Cologna
Jan Conrad
C. Couturier
Y. Cui
M. Dalton
I. D. Davids
B. Degrange
C. Deil
P. deWilt
A. Djannati-Ataï
W. Domainko
A. Donath
G. Dubus
K. Dutson
J. Dyks
M. Dyrda
T. Edwards
Kathrin Egberts
P. Eger
P. Espigat
C. Farnier
S. Fegan
F. Feinstein
M. V. Fernandes
D. Fernandez
A. Fiaon
G. Fontaine
A. Foerster
M. Fuessling
S. Gabici
M. Gajdus
Y. A. Gallant
T. Garrigoux
G. Giavitto
B. Giebels
J. F. Glicenstein
D. Gottschall
M. -H. Grondin
M. Grudzinska
D. Hadsch
S. Haeffner
J. Hahn
J. Harris
G. Heinzelmann
G. Henri
G. Hermann
O. Hervet
A. Hillert
James Anthony Hinton
W. Hofmann
P. Hofverberg
M. Holler
D. Horns
A. Ivascenko
A. Jacholkowska
C. Jahn
M. Jamrozy
M. Janiak
F. Jankowsky
I. Jung
M. A. Kastendieck
Krzysztof Katarzynski
Uli Katz
S. Kaufmann
B. Khelifi
M. Kieffer
S. Klepser
D. Klochkov
W. Kluzniak
D. Kolitzus
Nukri Komin
K. Kosack
S. Krakau
F. Krayzel
P. P. Krueger
H. Laffon
G. Lamanna
J. Lefaucheur
V. Lefranc
A. Lemiere
M. Lemoine-Goumard
J. -P. Lenain
T. Lohse
A. Lopatin
C-C Lu
V. Marandon
A. Marcowith
R. Marx
G. Maurin
N. Maxted
M. Mayer
T. J. L. McComb
J. Mehault
P. J. Meintjes
U. Menzler
Manuela Meyer
A. M. W. Mitchell
R. Moderski
Mmahmoud Mohamed
K. Mora
E. Moulin
T. Murach
M. de Naurois
J. Niemiec
S. J. Nolan
L. Oakes
H. Odaka
S. Ohm
B. Opitz
M. Ostrowski
I. Oya
M. Panter
R. D. Parsons
M. Paz Arribas
N. W. Pekeur
G. Pelletier
J. Perez
P. -O. Petrucci
B. Peyaud
S. Pita
H. Poon
G. Puehlhofer
M. Punch
A. Quirrenbach
S. Raab
I. Reichardt
A. Reimer
Olaf Reimer
M. Renaud
R. de Los Reyes
F. Rieger
L. Rob
C. Romoli
S. Rosier-Lees
G. Rowell
B. Rudak
C. B. Rulten
V. Sahakian
D. Salek
David M. Sanchez
A. Santangelo
R. Schlickeiser
F. Schuessler
A. Schulz
U. Schwanke
S. Schwarzburg
S. Schwemmer
H. Sol
F. Spanier
G. Spengler
F. Spies
L. Stawarz
R. Steenkamp
Christian Stegmann
F. Stinzing
K. Stycz
Iurii Sushch
J. -P. Tavernet
T. Tavernier
A. M. Taylor
R. Terrier
M. Tluczykont
C. Trichard
K. Valerius
Christopher van Eldik
B. van Soelen
G. Vasileiadis
J. Veh
C. Venter
A. Viana
P. Vincent
J. Vink
H. J. Voelk
F. Volpe
M. Vorster
T. Vuillaume
P. Wagner
R. M. Wagner
M. Ward
M. Weidinger
Q. Weitzel
R. White
A. Wierzcholska
P. Willmann
A. Woernlein
D. Wouters
R. Yang
V. Zabalza
D. Zaborov
M. Zacharias
A. A. Zdziarski
Alraune Zech
H. -S. Zechlin
eng
uncontrolled
BL Lacertae objects: individual (PG 1553+113)
eng
uncontrolled
galaxies: active
eng
uncontrolled
galaxies: distances and redshifts
eng
uncontrolled
gamma-rays: galaxies
Institut für Physik und Astronomie
Referiert
39240
2015
2015
eng
406
412
7
6220
347
article
American Assoc. for the Advancement of Science
Washington
HESS Collaboration
1
--
--
--
The exceptionally powerful TeV gamma-ray emitters in the Large Magellanic Cloud
The Large Magellanic Cloud, a satellite galaxy of the Milky Way, has been observed with the High Energy Stereoscopic System (H.E.S.S.) above an energy of 100 billion electron volts for a deep exposure of 210 hours. Three sources of different types were detected: the pulsar wind nebula of the most energetic pulsar known, N 157B; the radio-loud supernova remnant N 132D; and the largest nonthermal x-ray shell, the superbubble 30 Dor C. The unique object SN 1987A is, unexpectedly, not detected, which constrains the theoretical framework of particle acceleration in very young supernova remnants. These detections reveal the most energetic tip of a g-ray source population in an external galaxy and provide via 30 Dor C the unambiguous detection of g-ray emission from a superbubble.
Science
10.1126/science.1261313
0036-8075
1095-9203
wos:2015
WOS:000348225800039
Abramowski, A (reprint author), Univ Hamburg Inst Expt Phys, Luruper Chaussee 149, D-22761 Hamburg, Germany.
German Ministry for Education and Research (BMBF); Max Planck Society;
German Research Foundation (DFG); French Ministry for Research;
CNRS-IN2P3; Astroparticle Interdisciplinary Programme of the CNRS; U.K.
Science and Technology Facilities Council (STFC); Institute of Particle
and Nuclear Physics (IPNP) of Charles University; Czech Science
Foundation; Polish Ministry of Science and Higher Education; South
African Department of Science and Technology; South African National
Research Foundation; University of Namibia; European Community
[ERC-StG-259391]
Attila Abramowski
Felix A. Aharonian
Faical Ait Benkhali
A. G. Akhperjanian
Ekrem Oǧuzhan Angüner
Michael Backes
Shangkari Balenderan
Arnim Balzer
Anna Barnacka
Yvonne Becherini
J. Becker-Tjus
David Berge
Sabrina Bernhard
K. Bernlöhr
E. Birsin
Jonathan Biteau
Markus Boettcher
Catherine Boisson
J. Bolmont
Pol Bordas
Johan Bregeon
Francois Brun
Pierre Brun
Mark Bryan
Tomasz Bulik
Svenja Carrigan
Sabrina Casanova
Paula M. Chadwick
N. Chakraborty
R. Chalme-Calvet
Ryan C. G. Chaves
M. Chretien
Sergio Colafrancesco
Gabriele Cologna
Jan Conrad
C. Couturier
Y. Cui
M. Dalton
I. D. Davids
B. Degrange
C. Deil
P. de Wilt
A. Djannati-Ataï
W. Domainko
A. Donath
G. Dubus
K. Dutson
J. Dyks
M. Dyrda
T. Edwards
Kathrin Egberts
P. Eger
P. Espigat
C. Farnier
S. Fegan
F. Feinstein
M. V. Fernandes
D. Fernandez
A. Fiasson
G. Fontaine
A. Foerster
M. Fuessling
S. Gabici
M. Gajdus
Y. A. Gallant
T. Garrigoux
G. Giavitto
B. Giebels
J. F. Glicenstein
D. Gottschall
M-H. Grondin
M. Grudzinska
D. Hadasch
S. Haeffner
J. Hahn
J. Harris
G. Heinzelmann
G. Henri
G. Hermann
O. Hervet
A. Hillert
James Anthony Hinton
W. Hofmann
P. Hofverberg
M. Holler
D. Horns
A. Ivascenko
A. Jacholkowska
C. Jahn
M. Jamrozy
M. Janiak
F. Jankowsky
I. Jung
M. A. Kastendieck
K. Katarzynski
U. Katz
S. Kaufmann
B. Khelifi
M. Kieffer
S. Klepser
D. Klochkov
W. Kluzniak
D. Kolitzus
Nu. Komin
K. Kosack
S. Krakau
F. Krayzel
P. P. Krueger
H. Laffon
G. Lamanna
J. Lefaucheur
V. Lefranc
A. Lemiere
M. Lemoine-Goumard
J-P. Lenain
T. Lohse
A. Lopatin
C-C. Lu
V. Marandon
A. Marcowith
R. Marx
G. Maurin
N. Maxted
M. Mayer
T. J. L. McComb
J. Mehault
P. J. Meintjes
U. Menzler
M. Meyer
A. M. W. Mitchell
R. Moderski
M. Mohamed
K. Mora
E. Moulin
T. Murach
M. de Naurois
J. Niemiec
S. J. Nolan
L. Oakes
H. Odaka
S. Ohm
B. Opitz
M. Ostrowski
I. Oya
M. Panter
R. D. Parsons
M. Paz Arribas
N. W. Pekeur
G. Pelletier
J. Perez
P-O. Petrucci
B. Peyaud
S. Pita
H. Poon
G. Puehlhofer
M. Punch
A. Quirrenbach
S. Raab
I. Reichardt
A. Reimer
O. Reimer
M. Renaud
R. de los Reyes
F. Rieger
L. Rob
C. Romoli
S. Rosier-Lees
G. Rowell
B. Rudak
C. B. Rulten
V. Sahakian
D. Salek
David M. Sanchez
A. Santangelo
R. Schlickeiser
F. Schuessler
A. Schulz
U. Schwanke
S. Schwarzburg
S. Schwemmer
H. Sol
F. Spanier
G. Spengler
F. Spies
L. Stawarz
R. Steenkamp
Christian Stegmann
F. Stinzing
K. Stycz
Iurii Sushch
J-P. Tavernet
T. Tavernier
A. M. Taylor
R. Terrier
M. Tluczykont
C. Trichard
K. Valerius
C. van Eldik
B. van Soelen
G. Vasileiadis
J. Veh
C. Venter
A. Viana
P. Vincent
J. Vink
H. J. Voelk
F. Volpe
M. Vorster
T. Vuillaume
S. J. Wagner
P. Wagner
R. M. Wagner
M. Ward
M. Weidinger
Q. Weitzel
R. White
A. Wierzcholska
P. Willmann
A. Woernlein
D. Wouters
R. Yang
V. Zabalza
D. Zaborov
M. Zacharias
A. A. Zdziarski
Alraune Zech
H-S. Zechlin
Institut für Physik und Astronomie
Referiert
53102
2018
2018
eng
7
612
article
EDP Sciences
Les Ulis
H E S S Collaboration
1
2018-04-09
2018-04-09
--
Detailed spectral and morphological analysis of the shell type supernova remnant RCW 86
Aims. We aim for an understanding of the morphological and spectral properties of the supernova remnant RCW 86 and for insights into the production mechanism leading to the RCW 86 very high-energy gamma-ray emission. Methods. We analyzed High Energy Spectroscopic System (H.E.S.S.) data that had increased sensitivity compared to the observations presented in the RCW 86 H.E.S.S. discovery publication. Studies of the morphological correlation between the 0.5-1 keV X-ray band, the 2-5 keV X-ray band, radio, and gamma-ray emissions have been performed as well as broadband modeling of the spectral energy distribution with two different emission models. Results. We present the first conclusive evidence that the TeV gamma-ray emission region is shell-like based on our morphological studies. The comparison with 2-5 keV X-ray data reveals a correlation with the 0.4-50 TeV gamma-ray emission. The spectrum of RCW 86 is best described by a power law with an exponential cutoff at E-cut = (3.5 +/- 1.2(stat)) TeV and a spectral index of Gamma approximate to 1.6 +/- 0.2. A static leptonic one-zone model adequately describes the measured spectral energy distribution of RCW 86, with the resultant total kinetic energy of the electrons above 1 GeV being equivalent to similar to 0.1% of the initial kinetic energy of a Type Ia supernova explosion (10(51) erg). When using a hadronic model, a magnetic field of B approximate to 100 mu G is needed to represent the measured data. Although this is comparable to formerly published estimates, a standard E-2 spectrum for the proton distribution cannot describe the gamma-ray data. Instead, a spectral index of Gamma(p) approximate to 1.7 would be required, which implies that similar to 7 x 10(49)/n(cm-3) erg has been transferred into high-energy protons with the effective density n(cm-3) = n/1 cm(-3). This is about 10% of the kinetic energy of a typical Type Ia supernova under the assumption of a density of 1 cm(-3).
Astronomy and astrophysics : an international weekly journal
10.1051/0004-6361/201526545
1432-0746
wos:2018
A4
WOS:000429404700004
Jung-Richardt, I (reprint author), Univ Erlangen Nurnberg, Phys Inst, Erwin Rommel Str 1, D-91058 Erlangen, Germany.
German Ministry for Education and Research (BMBF)Federal Ministry of Education & Research (BMBF); Max Planck SocietyMax Planck SocietyFoundation CELLEX; German Research Foundation (DFG)German Research Foundation (DFG); French Ministry for ResearchMinistry of Research, France; CNRS-IN2P3Centre National de la Recherche Scientifique (CNRS); Astroparticle Interdisciplinary Programme of the CNRS; UK Science and Technology Facilities Council (STFC)Science & Technology Facilities Council (STFC); IPNP of the Charles University; Czech Science FoundationGrant Agency of the Czech Republic; Polish Ministry of Science and Higher EducationMinistry of Science and Higher Education, Poland; South African Department of Science and Technology; National Research Foundation; University of Namibia; Australian Research CouncilAustralian Research Council; Science Foundation for Physics within The University of SydneyUniversity of Sydney
2021-12-13T12:08:21+00:00
sword
importub
filename=package.tar
c388a66b51dfe084b83f8c2d949574d7
false
true
A. Abramowski
Felix A. Aharonian
F. Ait Benkhali
A. G. Akhperjanian
E. O. Anguener
M. Backes
A. Balzer
Y. Becherini
J. Becker Tjus
D. Berge
S. Bernhard
K. Bernloehr
E. Birsin
R. Blackwell
M. Boettcher
C. Boisson
J. Bolmont
Pol Bordas
J. Bregeon
F. Brun
P. Brun
M. Bryan
T. Bulik
J. Carr
Sabrina Casanova
N. Chakraborty
R. Chalme-Calvet
R. C. G. Chaves
A. Chen
J. Chevalier
M. Chretien
S. Colafrancesco
G. Cologna
B. Condon
J. Conrad
C. Couturier
Y. Cui
I. D. Davids
B. Degrange
C. Deil
P. deWilt
A. Djannati-Atai
W. Domainko
A. Donath
G. Dubus
K. Dutson
J. Dyks
M. Dyrda
T. Edwards
Kathrin Egberts
P. Eger
J. -P. Ernenwein
P. Espigat
C. Farnier
S. Fegan
F. Feinstein
M. V. Fernandes
D. Fernandez
A. Fiasson
G. Fontaine
A. Foerster
M. Fuessling
S. Gabici
M. Gajdus
Y. A. Gallant
T. Garrigoux
G. Giavitto
B. Giebels
J. F. Glicenstein
D. Gottschall
A. Goyal
M. -H. Grondin
M. Grudzinska
D. Hadasch
S. Haeffner
J. Hahn
J. Hawkes
G. Heinzelmann
G. Henri
G. Hermann
O. Hervet
A. Hillert
J. A. Hinton
W. Hofmann
P. Hofverberg
Clemens Hoischen
M. Holler
D. Horns
A. Ivascenko
A. Jacholkowska
M. Jamrozy
M. Janiak
F. Jankowsky
I. Jung-Richardt
M. A. Kastendieck
K. Katarzynski
U. Katz
D. Kerszberg
B. Khelifi
M. Kieffer
S. Klepser
D. Klochkov
W. Kluzniak
D. Kolitzus
Nu. Komin
K. Kosack
S. Krakau
F. Krayzel
P. P. Krueger
H. Laffon
G. Lamanna
J. Lau
J. Lefaucheur
V. Lefranc
A. Lemiere
M. Lemoine-Goumard
J. -P. Lenain
T. Lohse
A. Lopatin
M. Lorentz
C. -C. Lu
R. Lui
V. Marandon
A. Marcowith
C. Mariaud
R. Marx
G. Maurin
N. Maxted
M. Mayer
P. J. Meintjes
U. Menzler
M. Meyer
A. M. W. Mitchell
R. Moderski
M. Mohamed
K. Mora
E. Moulin
T. Murach
M. de Naurois
J. Niemiec
L. Oakes
H. Odaka
S. Oettl
S. Ohm
B. Opitz
M. Ostrowski
I. Oya
M. Panter
R. D. Parsons
M. Paz Arribas
N. W. Pekeur
G. Pelletier
P. -O. Petrucci
B. Peyaud
S. Pita
H. Poon
D. Prokhorov
H. Prokoph
G. Puehlhofer
M. Punch
A. Quirrenbach
S. Raab
I. Reichardt
A. Reimer
O. Reimer
M. Renaud
R. de los Reyes
F. Rieger
C. Romoli
S. Rosier-Lees
G. Rowell
B. Rudak
C. B. Rulten
V. Sahakian
D. Salek
D. A. Sanchez
A. Santangelo
M. Sasaki
R. Schlickeiser
F. Schuessler
A. Schulz
U. Schwanke
S. Schwemmer
A. S. Seyffert
R. Simoni
H. Sol
F. Spanier
G. Spengler
F. Spies
L. Stawarz
R. Steenkamp
Christian Stegmann
F. Stinzing
K. Stycz
I. Sushch
J. -P. Tavernet
T. Tavernier
A. M. Taylor
R. Terrier
M. Tluczykont
C. Trichard
R. Tuffs
K. Valerius
J. van der Walt
C. van Eldik
B. van Soelen
G. Vasileiadis
J. Veh
C. Venter
A. Viana
P. Vincent
J. Vink
F. Voisin
H. J. Voelk
T. Vuillaume
S. J. Wagner
P. Wagner
R. M. Wagner
M. Weidinger
R. White
A. Wierzcholska
P. Willmann
A. Woernlein
D. Wouters
R. Yang
V. Zabalza
D. Zaborov
M. Zacharias
A. A. Zdziarski
Alraune Zech
F. Zefi
N. Zywucka
eng
uncontrolled
astroparticle physics
eng
uncontrolled
gamma rays: general
eng
uncontrolled
ISM: supernova remnants
eng
uncontrolled
cosmic rays
Physik
Institut für Physik und Astronomie
Referiert
Import
Bronze Open-Access
53343
2018
2018
eng
5
610
article
EDP Sciences
Les Ulis
1
2018-03-02
2018-03-02
--
Detection of variable VHE gamma-ray emission from the extra-galactic gamma-ray binary LMC P3
Context. Recently, the high-energy (HE, 0.1-100 GeV) gamma-ray emission from the object LMC P3 in the Large Magellanic Cloud (LMC) has been discovered to be modulated with a 10.3-day period, making it the first extra-galactic gamma-ray binary. Aims. This work aims at the detection of very-high-energy (VHE, >100 GeV) gamma-ray emission and the search for modulation of the VHE signal with the orbital period of the binary system. Methods. LMC P3 has been observed with the High Energy Stereoscopic System (H.E.S.S.); the acceptance-corrected exposure time is 100 h. The data set has been folded with the known orbital period of the system in order to test for variability of the emission. Results. VHE gamma-ray emission is detected with a statistical significance of 6.4 sigma. The data clearly show variability which is phase-locked to the orbital period of the system. Periodicity cannot be deduced from the H.E.S.S. data set alone. The orbit-averaged luminosity in the 1-10 TeV energy range is (1.4 +/- 0.2) x 10(35) erg s(-1). A luminosity of (5 +/- 1) x 10(35) erg s(-1) is reached during 20% of the orbit. HE and VHE gamma-ray emissions are anti-correlated. LMC P3 is the most luminous gamma-ray binary known so far.
Astronomy and astrophysics : an international weekly journal
10.1051/0004-6361/201732426
1432-0746
wos:2018
L17
WOS:000427146200001
Komin, N (reprint author), Univ Witwatersrand, Sch Phys, 1 Jan Smuts Ave, ZA-2050 Johannesburg, South Africa.; Haupt, M (reprint author), DESY, D-15738 Zeuthen, Germany., contact.hess@hess-experiment.eu
German Ministry for Education and Research (BMBF)Federal Ministry of Education & Research (BMBF); Max Planck SocietyMax Planck SocietyFoundation CELLEX; German Research Foundation (DFG)German Research Foundation (DFG); Alexander von Humboldt FoundationAlexander von Humboldt Foundation; Deutsche ForschungsgemeinschaftGerman Research Foundation (DFG); French Ministry for ResearchMinistry of Research, France; CNRS-IN2P3Centre National de la Recherche Scientifique (CNRS); Astroparticle Interdisciplinary Programme of the CNRS; U.K. Science and Technology Facilities Council (STFC)Science & Technology Facilities Council (STFC); IPNP of the Charles University; Czech Science FoundationGrant Agency of the Czech Republic; Polish National Science Centre; South African Department of Science and Technology; National Research Foundation; University of Namibia; National Commission on Research, Science & Technology of Namibia (NCRST); Innsbruck University; Austrian Science Fund (FWF)Austrian Science Fund (FWF); Austrian Federal Ministry for Science, Research and Economy; University of Adelaide; Australian Research CouncilAustralian Research Council; Japan Society for the Promotion of ScienceMinistry of Education, Culture, Sports, Science and Technology, Japan (MEXT)Japan Society for the Promotion of Science; University of Amsterdam
2022-01-07T10:20:17+00:00
sword
importub
filename=package.tar
7654d6f0f813f5185fea829229f84dd1
false
true
Hassan E. Abdalla
H. E. S. S. Collaboration
A. Abramowski
Felix A. Aharonian
F. Ait Benkhali
Ekrem Oǧuzhan Angüner
M. Arakawa
C. Armand
M. Arrieta
M. Backes
A. Balzer
M. Barnard
Y. Becherini
J. Becker Tjus
D. Berge
S. Bernhard
K. Bernloehr
R. Blackwell
M. Bottcher
C. Boisson
J. Bolmont
S. Bonnefoy
Pol Bordas
J. Bregeon
F. Brun
P. Brun
M. Bryan
M. Buechele
T. Bulik
M. Capasso
S. Caroff
A. Carosi
Sabrina Casanova
M. Cerruti
N. Chakraborty
R. C. G. Chaves
A. Chen
J. Chevalier
S. Colafrancesco
B. Condon
J. Conrad
I. D. Davids
J. Decock
C. Deil
J. Devin
P. deWilt
L. Dirson
A. Djannati-Atai
A. Donath
J. Dyks
T. Edwards
Kathrin Egberts
G. Emery
J. -P. Ernenwein
S. Eschbach
C. Farnier
S. Fegan
M. V. Fernandes
A. Fiasson
G. Fontaine
S. Funk
M. Fuessling
S. Gabici
Y. A. Gallant
T. Garrigoux
F. Gate
G. Giavitto
D. Glawion
J. F. Glicenstein
D. Gottschall
M. -H. Grondin
J. Hahn
M. Haupt
J. Hawkes
G. Heinzelmann
G. Henri
G. Hermann
J. A. Hinton
W. Hofmann
Clemens Hoischen
T. L. Holch
M. Holler
D. Horns
A. Ivascenko
H. Iwasaki
A. Jacholkowska
M. Jamrozy
D. Jankowsky
F. Jankowsky
M. Jingo
L. Jouvin
I. Jung-Richardt
M. A. Kastendieck
K. Katarzynski
M. Katsuragawa
U. Katz
D. Kerszberg
D. Khangulyan
B. Khelifi
J. King
S. Klepser
D. Klochkov
W. Kluzniak
Nu. Komin
K. Kosack
S. Krakau
M. Kraus
P. P. Kruger
H. Laffon
G. Lamanna
J. Lau
J. Lefaucheur
A. Lemiere
M. Lemoine-Goumard
J. -P. Lenain
Eva Leser
T. Lohse
M. Lorentz
R. Liu
R. Lopez-Coto
I. Lypova
D. Malyshev
V. Marandon
A. Marcowith
C. Mariaud
R. Marx
G. Maurin
N. Maxted
M. Mayer
P. J. Meintjes
M. Meyer
A. M. W. Mitchell
R. Moderski
M. Mohamed
L. Mohrmann
K. Mora
E. Moulin
T. Murach
S. Nakashima
M. de Naurois
H. Ndiyavala
F. Niederwanger
J. Niemiec
L. Oakes
H. Odaka
S. Ohm
M. Ostrowski
I. Oya
M. Padovani
M. Panter
R. D. Parsons
N. W. Pekeur
G. Pelletier
C. Perennes
P. -O. Petrucci
B. Peyaud
Q. Piel
S. Pita
V. Poireau
D. A. Prokhorov
H. Prokoph
G. Puehlhofer
M. Punch
A. Quirrenbach
S. Raab
R. Rauth
A. Reimer
O. Reimer
M. Renaud
R. de los Reyes
F. Rieger
L. Rinchiuso
C. Romoli
G. Rowell
B. Rudak
C. B. Rulten
V. Sahakian
S. Saito
D. A. Sanchez
A. Santangelo
M. Sasaki
R. Schlickeiser
F. Schussler
A. Schulz
U. Schwanke
S. Schwemmer
M. Seglar-Arroyo
A. S. Seyffert
N. Shafi
I. Shilon
K. Shiningayamwe
R. Simoni
H. Sol
F. Spanier
M. Spir-Jacob
L. Stawarz
R. Steenkamp
Christian Stegmann
Constantin Beverly Steppa
I. Sushch
T. Takahashi
J. -P. Tavernet
T. Tavernier
A. M. Taylor
R. Terrier
L. Tibaldo
D. Tiziani
M. Tluczykont
C. Trichard
M. Tsirou
N. Tsuji
R. Tuffs
Y. Uchiyama
D. J. van der Walt
C. van Eldik
C. van Rensburg
B. van Soelen
G. Vasileiadis
J. Veh
C. Venter
A. Viana
P. Vincent
J. Vink
F. Voisin
H. J. Voelk
T. Vuillaume
Z. Wadiasingh
S. J. Wagner
P. Wagner
R. M. Wagner
R. White
A. Wierzcholska
P. Willmann
A. Woernlein
D. Wouters
R. Yang
D. Zaborov
M. Zacharias
R. Zanin
A. A. Zdziarski
Alraune Zech
F. Zefi
A. Ziegler
J. Zorn
N. Zywucka
eng
uncontrolled
gamma rays: stars
eng
uncontrolled
binaries: general
eng
uncontrolled
stars: massive
Physik
Institut für Physik und Astronomie
Referiert
Import
Bronze Open-Access
48817
2019
2019
eng
16
627
article
EDP Sciences
Les Ulis
HESS Collaboration
1
2019-07-08
2019-05-17
--
H.E.S.S. and Suzaku observations of the Vela X pulsar wind nebula
Context. Pulsar wind nebulae (PWNe) represent the most prominent population of Galactic very-high-energy gamma-ray sources and are thought to be an efficient source of leptonic cosmic rays. Vela X is a nearby middle-aged PWN, which shows bright X-ray and TeV gamma-ray emission towards an elongated structure called the cocoon. Aims. Since TeV emission is likely inverse-Compton emission of electrons, predominantly from interactions with the cosmic microwave background, while X-ray emission is synchrotron radiation of the same electrons, we aim to derive the properties of the relativistic particles and of magnetic fields with minimal modelling. Methods. We used data from the Suzaku XIS to derive the spectra from three compact regions in Vela X covering distances from 0.3 to 4 pc from the pulsar along the cocoon. We obtained gamma-ray spectra of the same regions from H.E.S.S. observations and fitted a radiative model to the multi-wavelength spectra. Results. The TeV electron spectra and magnetic field strengths are consistent within the uncertainties for the three regions, with energy densities of the order 10(-12) erg cm(-3). The data indicate the presence of a cutoff in the electron spectrum at energies of similar to 100 TeV and a magnetic field strength of similar to 6 mu G. Constraints on the presence of turbulent magnetic fields are weak. Conclusions. The pressure of TeV electrons and magnetic fields in the cocoon is dynamically negligible, requiring the presence of another dominant pressure component to balance the pulsar wind at the termination shock. Sub-TeV electrons cannot completely account for the missing pressure, which may be provided either by relativistic ions or from mixing of the ejecta with the pulsar wind. The electron spectra are consistent with expectations from transport scenarios dominated either by advection via the reverse shock or by diffusion, but for the latter the role of radiative losses near the termination shock needs to be further investigated in the light of the measured cutoff energies. Constraints on turbulent magnetic fields and the shape of the electron cutoff can be improved by spectral measurements in the energy range greater than or similar to 10 keV.
Astronomy and astrophysics : an international weekly journal
10.1051/0004-6361/201935458
1432-0746
wos:2019
A100
WOS:000474334300001
Abdalla, H (reprint author), North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa., luigi.tibaldo@irap.omp.eu
German Ministry for Education and Research (BMBF)Federal Ministry of Education & Research (BMBF); Max Planck SocietyMax Planck Society; German Research Foundation (DFG)German Research Foundation (DFG); Alexander von Humboldt FoundationAlexander von Humboldt Foundation; Deutsche ForschungsgemeinschaftGerman Research Foundation (DFG); French Ministry for ResearchMinistry of Research, France; CNRS-IN2P3Centre National de la Recherche Scientifique (CNRS); Astroparticle Interdisciplinary Programme of the CNRS; IPNP of the Charles University; Czech Science FoundationGrant Agency of the Czech Republic; Polish National Science Centre; South African Department of Science and Technology and National Research Foundation; University of Namibia; National Commission on Research, Science & Technology of Namibia (NCRST); Austrian Science Fund (FWF)Austrian Science Fund (FWF); Austrian Federal Ministry for Science, Research and Economy; Australian Research CouncilAustralian Research Council; University of Amsterdam; EGI Federation; U. K. Science and Technology Facilities Council (STFC)Science & Technology Facilities Council (STFC); Innsbruck University; University of Adelaide; Japan Society for the Promotion of ScienceMinistry of Education, Culture, Sports, Science and Technology, Japan (MEXT)Japan Society for the Promotion of Science; Namibian authorities
2021-01-07T13:54:47+00:00
sword
importub
filename=package.tar
c8ad68afa1f0334b88f725827f8482e5
false
true
CC-BY - Namensnennung 4.0 International
Hassan E. Abdalla
Felix A. Aharonian
F. Ait Benkhali
Ekrem Oǧuzhan Angüner
M. Arakawa
C. Arcaro
C. Armand
M. Backes
M. Barnard
Y. Becherini
D. Berge
K. Bernloehr
R. Blackwell
M. Bottcher
C. Boisson
J. Bolmont
S. Bonnefoy
J. Bregeon
F. Brun
P. Brun
M. Bryan
M. Buechele
T. Bulik
T. Bylund
M. Capasso
S. Caroff
A. Carosi
Sabrina Casanova
M. Cerruti
N. Chakraborty
T. Chand
S. Chandra
R. C. G. Chaves
A. Chen
S. Colafrancesco
B. Condon
I. D. Davids
C. Deil
J. Devin
P. deWilt
L. Dirson
A. Djannati-Atai
A. Dmytriiev
A. Donath
V Doroshenko
J. Dyks
Kathrin Egberts
G. Emery
J-P Ernenwein
S. Eschbach
K. Feijen
S. Fegan
A. Fiasson
G. Fontaine
S. Funk
M. Fuessling
S. Gabici
Y. A. Gallant
F. Gate
G. Giavitto
D. Glawion
J. F. Glicenstein
D. Gottschall
M-H Grondin
J. Hahn
M. Haupt
G. Heinzelmann
G. Henri
G. Hermann
James Anthony Hinton
W. Hofmann
Clemens Hoischen
Tim Lukas Holch
M. Holler
D. Horns
D. Huber
H. Iwasaki
A. Jacholkowska
M. Jamrozy
D. Jankowsky
F. Jankowsky
L. Jouvin
I Jung-Richardt
M. A. Kastendieck
K. Katarzynski
M. Katsuragawa
U. Katz
D. Khangulyan
B. Khelifi
J. King
S. Klepser
W. Kluzniak
Nu Komin
K. Kosack
D. Kostunin
M. Kraus
G. Lamanna
J. Lau
A. Lemiere
M. Lemoine-Goumard
J-P Lenain
Eva Leser
T. Lohse
R. Lopez-Coto
I Lypova
D. Malyshev
V Marandon
A. Marcowith
C. Mariaud
G. Marti-Devesa
R. Marx
G. Maurin
N. Maxted
P. J. Meintjes
A. M. W. Mitchell
R. Moderski
M. Mohamed
L. Mohrmann
C. Moore
E. Moulin
T. Murach
S. Nakashima
M. de Naurois
H. Ndiyavala
F. Niederwanger
J. Niemiec
L. Oakes
H. Odaka
S. Ohm
E. de Ona Wilhelmi
M. Ostrowski
I Oya
M. Panter
R. D. Parsons
C. Perennes
P-O Petrucci
B. Peyaud
Q. Piel
S. Pita
V Poireau
A. Priyana Noel
D. A. Prokhorov
H. Prokoph
G. Puehlhofer
M. Punch
A. Quirrenbach
S. Raab
R. Rauth
A. Reimer
O. Reimer
M. Renaud
F. Rieger
L. Rinchiuso
C. Romoli
G. Rowell
B. Rudak
E. Ruiz-Velasco
V Sahakian
S. Saito
David M. Sanchez
A. Santangelo
M. Sasaki
R. Schlickeiser
F. Schussler
A. Schulz
H. Schutte
U. Schwanke
S. Schwemmer
M. Seglar-Arroyo
M. Senniappan
A. S. Seyffert
N. Shafi
I Shilon
K. Shiningayamwe
R. Simoni
A. Sinha
H. Sol
A. Specovius
M. Spir-Jacob
L. Stawarz
R. Steenkamp
Christian Stegmann
Constantin Beverly Steppa
T. Takahashi
J-P Tavernet
T. Tavernier
A. M. Taylor
R. Terrier
Luigi Tibaldo
D. Tiziani
M. Tluczykont
C. Trichard
M. Tsirou
N. Tsuji
R. Tuffs
Y. Uchiyama
D. J. van der Walt
C. van Eldik
C. van Rensburg
B. van Soelen
G. Vasileiadis
J. Veh
C. Venter
P. Vincent
J. Vink
F. Voisin
H. J. Voelk
T. Vuillaume
Z. Wadiasingh
S. J. Wagner
R. White
A. Wierzcholska
R. Yang
H. Yoneda
D. Zaborov
M. Zacharias
R. Zanin
A. A. Zdziarski
Alraune Zech
A. Ziegler
J. Zorn
N. Zywucka
eng
uncontrolled
stars: winds, outflows
eng
uncontrolled
gamma rays: stars
eng
uncontrolled
radiation mechanisms: non-thermal
eng
uncontrolled
acceleration of particles
eng
uncontrolled
pulsars: individual: PSR B0833-45
Physik
Institut für Physik und Astronomie
Referiert
Import
Hybrid Open-Access
50442
2019
2019
eng
18
621
article
EDP Sciences
Les Ulis
HESS Collaboration
1
2019-01-15
--
--
Particle transport within the pulsar wind nebula HESS J1825-137
Context. We present a detailed view of the pulsar wind nebula (PWN) HESS J1825-137. We aim to constrain the mechanisms dominating the particle transport within the nebula, accounting for its anomalously large size and spectral characteristics. Aims. The nebula was studied using a deep exposure from over 12 years of H.E.S.S. I operation, together with data from H.E.S.S. II that improve the low-energy sensitivity. Enhanced energy-dependent morphological and spatially resolved spectral analyses probe the very high energy (VHE, E > 0.1 TeV) gamma-ray properties of the nebula. Methods. The nebula emission is revealed to extend out to 1.5 degrees from the pulsar, similar to 1.5 times farther than previously seen, making HESS J1825-137, with an intrinsic diameter of similar to 100 pc, potentially the largest gamma-ray PWN currently known. Characterising the strongly energy-dependent morphology of the nebula enables us to constrain the particle transport mechanisms. A dependence of the nebula extent with energy of R proportional to E alpha with alpha = -0.29 +/- 0.04(stat) +/- 0.05(sys) disfavours a pure diffusion scenario for particle transport within the nebula. The total gamma-ray flux of the nebula above 1 TeV is found to be (1.12 +/- 0.03(stat) +/- 0.25(sys)) +/- 10(-11) cm(-2) s(-1), corresponding to similar to 64% of the flux of the Crab nebula. Results. HESS J1825-137 is a PWN with clearly energy-dependent morphology at VHE gamma-ray energies. This source is used as a laboratory to investigate particle transport within intermediate-age PWNe. Based on deep observations of this highly spatially extended PWN, we produce a spectral map of the region that provides insights into the spectral variation within the nebula.
Astronomy and astrophysics : an international weekly journal
10.1051/0004-6361/201834335
1432-0746
wos:2019
A116
WOS:000455572500001
Mitchell, AMW (reprint author), Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany.; Caroff, S (reprint author), Ecole Polytech, IN2P3, CNRS, Lab Leprince Ringuet, F-91128 Palaiseau, France.; Mitchell, AMW (reprint author), Univ Zurich, Phys Inst, Winterthurerstr 190, CH-8057 Zurich, Switzerland.
German Ministry for Education and Research (BMBF)Federal Ministry of Education & Research (BMBF); Max Planck SocietyMax Planck SocietyFoundation CELLEX; German Research Foundation (DFG)German Research Foundation (DFG); Helmholtz AssociationHelmholtz Association; Alexander von Humboldt FoundationAlexander von Humboldt Foundation; French Ministry of Higher Education, Research and Innovation; Centre National de la Recherche Scientifique (CNRS/IN2P3); Commissariat a Energy Commission; UK Science and Technology Facilities Council (STFC)Science & Technology Facilities Council (STFC); Knut and Alice Wallenberg FoundationKnut & Alice Wallenberg Foundation; National Science Centre, Poland [2016/22/M/ST9/00382]; South African Department of Science and Technology; National Research Foundation; University of Namibia; National Commission on Research, Science& Technology of Namibia (NCRST); Austrian Federal Ministry of Education, Science and Research; Austrian Science Fund (FWF)Austrian Science Fund (FWF); Australian Research Council (ARC)Australian Research Council; Japan Society for the Promotion of ScienceMinistry of Education, Culture, Sports, Science and Technology, Japan (MEXT)Japan Society for the Promotion of Science; University of Amsterdam; Centre National de la Recherche Scientifique (CNRS/INSU)Centre National de la Recherche Scientifique (CNRS)
2021-04-20T12:30:01+00:00
sword
importub
filename=package.tar
1002341c58905c946a2f6e28105aa650
false
true
Hassan E. Abdalla
Felix A. Aharonian
F. Ait Benkhali
Ekrem Oǧuzhan Angüner
M. Arakawa
C. Arcaro
C. Armand
M. Arrieta
M. Backes
M. Barnard
Y. Becherini
J. Becker Tjus
D. Berge
K. Bernloehr
R. Blackwell
M. Bottcher
C. Boisson
J. Bolmont
S. Bonnefoy
Pol Bordas
J. Bregeon
F. Brun
P. Brun
M. Bryan
M. Buechele
T. Bulik
T. Bylund
M. Capasso
S. Caroff
A. Carosi
Sabrina Casanova
M. Cerruti
N. Chakraborty
T. Chand
S. Chandra
R. C. G. Chaves
A. Chen
S. Colafrancesco
B. Condon
I. D. Davids
C. Deil
J. Devin
P. deWilt
L. Dirson
A. Djannati-Atai
A. Dmytriiev
A. Donath
V Doroshenko
J. Dyks
Kathrin Egberts
G. Emery
J-P Ernenwein
S. Eschbach
S. Fegan
A. Fiasson
G. Fontaine
S. Funk
M. Fuessling
S. Gabici
Y. A. Gallant
F. Gate
G. Giavitto
D. Glawion
J. F. Glicenstein
D. Gottschall
M-H Grondin
J. Hahn
M. Haupt
G. Heinzelmann
G. Henri
G. Hermann
James Anthony Hinton
W. Hofmann
Clemens Hoischen
Tim Lukas Holch
M. Holler
D. Horns
D. Huber
H. Iwasaki
A. Jacholkowska
M. Jamrozy
D. Jankowsky
F. Jankowsky
L. Jouvin
I Jung-Richardt
M. A. Kastendieck
K. Katarzynski
M. Katsuragawa
U. Katz
D. Kerszberg
D. Khangulyan
B. Khelifi
J. King
S. Klepser
W. Kluzniak
Nu Komin
K. Kosack
M. Kraus
G. Lamanna
J. Lau
J. Lefaucheur
A. Lemiere
M. Lemoine-Goumard
J-P Lenain
Eva Leser
T. Lohse
R. Lopez-Coto
I Lypova
D. Malyshev
V Marandon
A. Marcowith
C. Mariaud
G. Marti-Devesa
R. Marx
G. Maurin
P. J. Meintjes
A. M. W. Mitchell
R. Moderski
M. Mohamed
L. Mohrmann
C. Moore
E. Moulin
T. Murach
S. Nakashima
M. de Naurois
H. Ndiyavala
F. Niederwanger
J. Niemiec
L. Oakes
H. Odaka
S. Ohm
M. Ostrowski
I Oya
M. Panter
R. D. Parsons
C. Perennes
P-O Petrucci
B. Peyaud
Q. Piel
S. Pita
V Poireau
A. Priyana Noel
D. A. Prokhorov
H. Prokoph
G. Puehlhofer
M. Punch
A. Quirrenbach
S. Raab
R. Rauth
A. Reimer
O. Reimer
M. Renaud
F. Rieger
L. Rinchiuso
C. Romoli
G. Rowell
B. Rudak
E. Ruiz-Velasco
V Sahakian
S. Saito
David M. Sanchez
A. Santangelo
M. Sasaki
R. Schlickeiser
F. Schussler
A. Schulz
H. Schutte
U. Schwanke
S. Schwemmer
M. Seglar-Arroyo
M. Senniappan
A. S. Seyffert
N. Shafi
I Shilon
K. Shiningayamwe
R. Simoni
A. Sinha
H. Sol
A. Specovius
M. Spir-Jacob
L. Stawarz
R. Steenkamp
Christian Stegmann
Constantin Beverly Steppa
T. Takahashi
J-P Tavernet
T. Tavernier
A. M. Taylor
R. Terrier
L. Tibaldo
D. Tiziani
M. Tluczykont
C. Trichard
M. Tsirou
N. Tsuji
R. Tuffs
Y. Uchiyama
D. J. van der Walt
C. van Eldik
C. van Rensburg
B. van Soelen
G. Vasileiadis
J. Veh
C. Venter
P. Vincent
J. Vink
F. Voisin
H. J. Voelk
T. Vuillaume
Z. Wadiasingh
S. J. Wagner
R. M. Wagner
R. White
A. Wierzcholska
R. Yang
H. Yoneda
D. Zaborov
M. Zacharias
R. Zanin
A. A. Zdziarski
Alraune Zech
F. Zefi
A. Ziegler
J. Zorn
N. Zywucka
eng
uncontrolled
gamma rays: general
eng
uncontrolled
acceleration of particles
eng
uncontrolled
convection
eng
uncontrolled
diffusion
eng
uncontrolled
pulsars: general
Physik
Institut für Physik und Astronomie
Referiert
Import
Bronze Open-Access
48936
2019
2019
eng
3886
3891
6
3
486
article
Oxford Univ. Press
Oxford
H E S S Collaboration
1
--
2019-04-10
--
H.E.S.S. observations of the flaring gravitationally lensed galaxy PKS 1830-211
PKS 1830-211 is a known macrolensed quasar located at a redshift of z = 2.5. Its highenergy gamma-ray emission has been detected with the Fermi-Large Area Telescope (LAT) instrument and evidence for lensing was obtained by several authors from its high-energy data. Observations of PKS 1830-211 were taken with the High Energy Stereoscopic System (H.E.S.S.) array of Imaging Atmospheric Cherenkov Telescopes in 2014 August, following a flare alert by the Fermi-LAT Collaboration. The H.E.S.S observations were aimed at detecting a gamma-ray flare delayed by 20-27 d from the alert flare, as expected from observations at other wavelengths. More than 12 h of good-quality data were taken with an analysis threshold of similar to 67 GeV. The significance of a potential signal is computed as a function of the date and the average significance over the whole period. Data are compared to simultaneous observations by Fermi-LAT. No photon excess or significant signal is detected. An upper limit on PKS 1830-211 flux above 67 GeV is computed and compared to the extrapolation of the Fermi-LAT flare spectrum.
Monthly notices of the Royal Astronomical Society
10.1093/mnras/stz1031
0035-8711
1365-2966
wos:2019
WOS:000474903500069
Abdalla, H (reprint author), North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa.
German Ministry for Education and Research (BMBF)Federal Ministry of Education & Research (BMBF); Max Planck SocietyMax Planck SocietyFoundation CELLEX; German Research Foundation (DFG)German Research Foundation (DFG); Helmholtz AssociationHelmholtz Association; Alexander von Humboldt FoundationAlexander von Humboldt Foundation; French Ministry of Higher Education, Research and Innovation; Centre National de la Recherche Scientifique (CNRS/IN2P3); UK Science and Technology Facilities Council (STFC)Science & Technology Facilities Council (STFC); Knut and Alice Wallenberg FoundationKnut & Alice Wallenberg Foundation; National Science Centre, Poland [2016/22/M/ST9/00382]; South African Department of Science and Technology; University of Namibia; National Commission on Research, Science and Technology of Namibia (NCRST); Austrian Federal Ministry of Education, Science and Research; Austrian Science Fund (FWF)Austrian Science Fund (FWF); Australian Research Council (ARC)Australian Research Council; Japan Society for the Promotion of ScienceMinistry of Education, Culture, Sports, Science and Technology, Japan (MEXT)Japan Society for the Promotion of Science; University of Amsterdam; (CEA)French Atomic Energy Commission; National Research Foundation; Centre National de la Recherche Scientifique (CNRS/INSU)Centre National de la Recherche Scientifique (CNRS)
2021-01-15T14:44:38+00:00
sword
importub
filename=package.tar
079ec04b2dd0ec0ae734aa6c986defd1
false
true
Hassan E. Abdalla
Felix A. Aharonian
F. Ait Benkhali
Ekrem Oǧuzhan Angüner
M. Arakawa
C. Arcaro
C. Armand
M. Arrieta
M. Backes
M. Barnard
Y. Becherini
J. Becker Tjus
D. Berge
K. Bernloehr
R. Blackwell
M. Bottcher
C. Boisson
J. Bolmont
S. Bonnefoy
Pol Bordas
J. Bregeon
F. Brun
P. Brun
M. Bryan
M. Buchele
T. Bulik
T. Bylund
M. Capasso
S. Caroff
A. Carosi
Sabrina Casanova
M. Cerruti
N. Chakraborty
T. Chand
S. Chandra
R. C. G. Chaves
A. Chen
S. Colafrancesco
B. Condon
I. D. Davids
C. Deil
J. Devin
P. deWilt
L. Dirson
A. Djannati-Atai
A. Dmytriiev
A. Donath
V. Doroshenko
J. Dyks
Kathrin Egberts
G. Emery
J. -P. Ernenwein
S. Eschbach
S. Fegan
A. Fiasson
G. Fontaine
S. Funk
M. Fuessling
S. Gabici
Y. A. Gallant
F. Gate
G. Giavitto
D. Glawion
J. F. Glicenstein
D. Gottschall
M. -H. Grondin
J. Hahn
M. Haupt
G. Heinzelmann
G. Henri
G. Hermann
James Anthony Hinton
W. Hofmann
Clemens Hoischen
Tim Lukas Holch
M. Holler
D. Horns
D. Huber
H. Iwasaki
A. Jacholkowska
M. Jamrozy
D. Jankowsky
F. Jankowsky
L. Jouvin
I. Jung-Richardt
M. A. Kastendieck
K. Katarzynski
M. Katsuragawa
U. Katz
D. Khangulyan
B. Khelifi
J. King
S. Klepser
W. Kluzniak
Nu. Komin
K. Kosack
M. Kraus
G. Lamanna
J. Lau
J. Lefaucheur
A. Lemiere
M. Lemoine-Goumard
J. -P. Lenain
Eva Leser
T. Lohse
R. Lopez-Coto
M. Lorentz
I. Lypova
D. Malyshev
V. Marandon
A. Marcowith
C. Mariaud
G. Marti-Devesa
R. Marx
G. Maurin
P. J. Meintjes
A. M. W. Mitchell
R. Moderski
M. Mohamed
L. Mohrmann
C. Moore
E. Moulin
T. Murach
S. Nakashima
M. de Naurois
H. Ndiyavala
F. Niederwanger
J. Niemiec
L. Oakes
H. Odaka
S. Ohm
M. Ostrowski
I. Oya
M. Panter
R. D. Parsons
C. Perennes
P. -O. Petrucci
B. Peyaud
Q. Piel
S. Pita
V. Poireau
A. Priyana Noel
D. A. Prokhorov
H. Prokoph
G. Puehlhofer
M. Punch
A. Quirrenbach
S. Raab
R. Rauth
A. Reimer
O. Reimer
M. Renaud
F. Rieger
L. Rinchiuso
C. Romoli
G. Rowell
B. Rudak
E. Ruiz-Velasco
V. Sahakian
S. Saito
David M. Sanchez
A. Santangelo
M. Sasaki
R. Schlickeiser
F. Schussler
A. Schulz
H. Schutte
U. Schwanke
S. Schwemmer
M. Seglar-Arroyo
M. Senniappan
A. S. Seyffert
N. Shafi
I. Shilon
K. Shiningayamwe
R. Simoni
A. Sinha
H. Sol
A. Specovius
M. Spir-Jacob
L. Stawarz
R. Steenkamp
Christian Stegmann
Constantin Beverly Steppa
T. Takahashi
J. -P. Tavernet
T. Tavernier
A. M. Taylor
R. Terrier
D. Tiziani
M. Tluczykont
C. Trichard
M. Tsirou
N. Tsuji
R. Tuffs
Y. Uchiyama
D. J. van der Walt
C. van Eldik
C. van Rensburg
B. van Soelen
G. Vasileiadis
J. Veh
C. Venter
P. Vincent
J. Vink
F. Voisin
H. J. Voelk
T. Vuillaume
Z. Wadiasingh
S. J. Wagner
R. M. Wagner
R. White
A. Wierzcholska
R. Yang
H. Yoneda
D. Zaborov
M. Zacharias
R. Zanin
A. A. Zdziarski
Alraune Zech
A. Ziegler
J. Zorn
N. Zywucka
eng
uncontrolled
gravitational lensing: strong
eng
uncontrolled
diffuse radiation
eng
uncontrolled
gamma-rays: galaxies
Physik
Institut für Physik und Astronomie
Referiert
Import
Green Open-Access