35161
2013
2013
eng
3
18
16
2
43
preprint
Elsevier
Amsterdam
CTA Consortium
1
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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
36450
2011
2011
eng
193
316
124
3
32
article
Springer
Dordrecht
CTA Consortium
1
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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
38157
2014
2014
eng
14
2
780
article
IOP Publ. Ltd.
Bristol
VERITAS Collaboration, HESS Collaboration
1
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--
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Long-term TeV and X-RAY observations of the GAMMA- RAY binary hess J0632+057
The astrophysical journal : an international review of spectroscopy and astronomical physics
10.1088/0004-637X/780/2/168
0004-637X
1538-4357
wos:2014
168
WOS:000329097100055
Aliu, E (reprint author), Columbia Univ Barnard Coll, Dept Phys & Astron, New York, NY 10027 USA., afalcone@astro.psu.edu; gernot.maier@desy.de; pol.bordas@uni-tuebingen.de
U.S. Department of Energy Office of Science; U.S. National Science
Foundation; Smithsonian Institution; NSERC in Canada; Science Foundation
Ireland [SFI 10/RFP/AST2748]; STFC in the U.K; Helmholtz Association;
European Community [ERC-StG-259391]; German Ministry for Education and
Research (BMBF); Max Planck Society; French Ministry for Research;
CNRS-IN2P3; Astroparticle Interdisciplinary Programme of the CNRS; U.K.
Particle Physics and Astronomy Research Council (PPARC); IPNP of the
Charles University; South African Department of Science and Technology
and National Research Foundation; University of Namibia
E. Aliu
S. Archambault
T. Aune
B. Behera
M. Beilicke
W. Benbow
K. Berger
R. Bird
A. Bouvier
J. H. Buckley
V. Bugaev
K. Byrum
M. Cerruti
X. Chen
L. Ciupik
M. P. Connolly
W. Cui
C. Duke
J. Dumm
M. Errando
A. Falcone
S. Federici
Q. Feng
J. P. Finley
P. Fortin
L. Fortson
A. Furniss
N. Galante
G. H. Gillanders
S. Griffin
S. T. Griffiths
J. Grube
G. Gyuk
D. Hanna
J. Holder
G. Hughes
T. B. Humensky
P. Kaaret
M. Kertzman
Y. Khassen
D. Kieda
H. Krawczynski
F. Krennrich
M. J. Lang
A. S. Madhavan
G. Maier
P. Majumdar
A. McCann
P. Moriarty
R. Mukherjee
D. Nieto
R. A. Ong
A. N. Otte
N. Park
J. S. Perkins
M. Pohl
A. Popkow
H. Prokoph
J. Quinn
K. Ragan
J. Rajotte
L. C. Reyes
P. T. Reynolds
G. T. Richards
E. Roache
J. Rousselle
G. H. Sembroski
F. Sheidaei
C. Skole
A. W. Smith
D. Staszak
M. Stroh
Igor O. Telezhinsky
M. Theiling
J. V. Tucci
J. Tyler
A. Varlotta
S. Vincent
S. P. Wakely
A. Weinstein
R. Welsing
D. A. Williams
A. Zajczyk
B. Zitzer
Attila Abramowski
Felix A. Aharonian
Faical Ait Benkhali
A. G. Akhperjanian
Ekrem Oǧuzhan Angüner
Gisela Anton
Shangkari Balenderan
Arnim Balzer
Anna Barnacka
Yvonne Becherini
J. Becker Tjus
K. Bernlöhr
E. Birsin
E. Bissaldi
Jonathan Biteau
Markus Boettcher
Catherine Boisson
J. Bolmont
Pol Bordas
J. Brucker
Francois Brun
Pierre Brun
Tomasz Bulik
Svenja Carrigan
Sabrina Casanova
M. Cerruti
Paula M. Chadwick
R. Chalme-Calvet
Ryan C. G. Chaves
A. Cheesebrough
M. Chretien
Sergio Colafrancesco
Gabriele Cologna
Jan Conrad
C. Couturier
M. Dalton
M. K. Daniel
I. D. Davids
B. Degrange
C. Deil
P. deWilt
H. J. Dickinson
A. Djannati-Ataï
W. Domainko
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
M. Gajdus
Y. A. Gallant
T. Garrigoux
G. Giavitto
B. Giebels
J. F. Glicenstein
M. -H. Grondin
M. Grudzinska
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. 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
T. Kneiske
D. Kolitzus
Nu. Komin
K. Kosack
S. Krakau
F. Krayzel
P. P. Krueger
H. Laffon
G. Lamanna
J. Lefaucheur
A. Lemiere
M. Lemoine-Goumard
J. -P. Lenain
D. Lennarz
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
U. Menzler
M. Meyer
R. Moderski
M. Mohamed
E. Moulin
T. Murach
C. L. Naumann
M. de Naurois
J. Niemiec
S. J. Nolan
L. Oakes
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
J. Perez
P. -O. Petrucci
B. Peyaud
S. Pita
H. Poon
G. Puehlhofer
M. Punch
A. Quirrenbach
S. Raab
M. Raue
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
David M. Sanchez
A. Santangelo
R. Schlickeiser
F. Schuessler
A. Schulz
U. Schwanke
S. Schwarzburg
S. Schwemmer
H. Sol
G. Spengler
F. Spies
L. Stawarz
R. Steenkamp
Christian Stegmann
F. Stinzing
K. Stycz
Iurii Sushch
A. Szostek
J. -P. Tavernet
T. Tavernier
A. M. Taylor
R. Terrier
M. Tluczykont
C. Trichard
K. Valerius
C. van Eldik
G. Vasileiadis
C. Venter
A. Viana
P. Vincent
H. J. Voelk
F. Volpe
M. Vorster
S. J. Wagner
P. Wagner
M. Ward
M. Weidinger
Q. Weitzel
R. White
A. Wierzcholska
P. Willmann
A. Woernlein
D. Wouters
M. Zacharias
A. Zajczyk
A. A. Zdziarski
Alraune Zech
H. -S. Zechlin
eng
uncontrolled
acceleration of particles
eng
uncontrolled
binaries: general
eng
uncontrolled
gamma rays: general(HESS J0632+057, VER J0633+057)
Institut für Physik und Astronomie
Referiert
36123
2012
2012
eng
7
2
746
article
IOP Publ. Ltd.
Bristol
1
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Veritas observations of day-scale flaring of M 87 in 2010 April
VERITAS has been monitoring the very-high-energy (VHE; > 100 GeV) gamma-ray activity of the radio galaxy M87 since 2007. During 2008, flaring activity on a timescale of a few days was observed with a peak flux of (0.70 +/- 0.16) x 10(-11) cm(-2) s(-1) at energies above 350 GeV. In 2010 April, VERITAS detected a flare from M 87 with peak flux of (2.71 +/- 0.68) x 10(-11) cm(-2) s(-1) for E > 350 GeV. The source was observed for six consecutive nights during the flare, resulting in a total of 21 hr of good-quality data. The most rapid flux variation occurred on the trailing edge of the flare with an exponential flux decay time of 0.90(-0.15)(+0.22) days. The shortest detected exponential rise time is three times as long, at 2.87(+1.65)(-0.99) days. The quality of the data sample is such that spectral analysis can be performed for three periods: rising flux, peak flux, and falling flux. The spectra obtained are consistent with power-law forms. The spectral index at the peak of the flare is equal to 2.19 +/- 0.07. There is some indication that the spectrum is softer in the falling phase of the flare than the peak phase, with a confidence level corresponding to 3.6 standard deviations. We discuss the implications of these results for the acceleration and cooling rates of VHE electrons in M 87 and the constraints they provide on the physical size of the emitting region.
The astrophysical journal : an international review of spectroscopy and astronomical physics
10.1088/0004-637X/746/2/141
0004-637X
wos:2011-2013
141
WOS:000300406300027
Aliu, E (reprint author), Columbia Univ Barnard Coll, Dept Phys & Astron, New York, NY 10027 USA., cmhui@physics.utah.edu
U.S. Department of Energy Office of Science; U.S. National Science
Foundation; Smithsonian Institution; NSERC in Canada; Science Foundation
Ireland (SFI) [10/RFP/AST2748]; STFC in the UK
E. Aliu
T. Arlen
T. Aune
M. Beilicke
W. Benbow
A. Bouvier
S. M. Bradbury
J. H. Buckley
V. Bugaev
K. Byrum
A. Cannon
A. Cesarini
L. Ciupik
E. Collins-Hughes
M. P. Connolly
W. Cui
R. Dickherber
C. Duke
M. Errando
A. Falcone
J. P. Finley
G. Finnegan
L. Fortson
A. Furniss
N. Galante
D. Gall
S. Godambe
S. Griffin
J. Grube
R. Guenette
G. Gyuk
D. Hanna
J. Holder
H. Huan
G. Hughes
C. M. Hui
T. B. Humensky
A. Imran
P. Kaaret
N. Karlsson
M. Kertzman
D. Kieda
H. Krawczynski
F. Krennrich
M. J. Lang
S. LeBohec
A. S. Madhavan
G. Maier
P. Majumdar
S. McArthur
A. McCann
P. Moriarty
R. Mukherjee
P. D. Nunez
R. A. Ong
M. Orr
A. N. Otte
N. Park
J. S. Perkins
A. Pichel
Martin Pohl
H. Prokoph
J. Quinn
K. Ragan
L. C. Reyes
P. T. Reynolds
E. Roache
H. J. Rose
J. Ruppel
D. B. Saxon
M. Schroedter
G. H. Sembroski
G. D. Sentuerk
C. Skole
D. Staszak
G. Tesic
M. Theiling
S. Thibadeau
K. Tsurusaki
J. Tyler
A. Varlotta
V. V. Vassiliev
S. Vincent
M. Vivier
S. P. Wakely
J. E. Ward
T. C. Weekes
A. Weinstein
T. Weisgarber
D. A. Williams
B. Zitzer
eng
uncontrolled
galaxies: individual (M 87, VER J1230+123)
eng
uncontrolled
gamma rays: galaxies
Institut für Physik und Astronomie
Referiert
36480
2011
2011
eng
7
2
742
article
IOP Publ. Ltd.
Bristol
VERITAS Collaboration
1
--
--
--
Multiwavelenght observations of the previously unidentified blzar RX J0648.7+1516
We report on the VERITAS discovery of very high energy (VHE) gamma-ray emission above 200 GeV from the high-frequency-peaked BL Lac (HBL) object RX J0648.7+1516 (GB J0648+1516), associated with 1FGL J0648.8+1516. The photon spectrum above 200 GeV is fitted by a power law dN/dE = F-0(E/E-0)(-Gamma) with a photon index Gamma of 4.4 +/- 0.8(stat) +/- 0.3(syst) and a flux normalization F-0 of (2.3 +/- 0.5(stat) +/- 1.2(sys)) x 10(-11) TeV-1 cm(-2) s(-1) with E-0 = 300 GeV. No VHE variability is detected during VERITAS observations of RX J0648.7+1516 between 2010 March 4 and April 15. Following the VHE discovery, the optical identification and spectroscopic redshift were obtained using the Shane 3 m Telescope at the Lick Observatory, showing the unidentified object to be a BL Lac type with a redshift of z = 0.179. Broadband multiwavelength observations contemporaneous with the VERITAS exposure period can be used to subclassify the blazar as an HBL object, including data from the MDM observatory, Swift-UVOT, and X-Ray Telescope, and continuous monitoring at photon energies above 1 GeV from the Fermi Large Area Telescope (LAT). We find that in the absence of undetected, high-energy rapid variability, the one-zone synchrotron self-Compton (SSC) model overproduces the high-energy gamma-ray emission measured by the Fermi-LAT over 2.3 years. The spectral energy distribution can be parameterized satisfactorily with an external-Compton or lepto-hadronic model, which have two and six additional free parameters, respectively, compared to the one-zone SSC model.
The astrophysical journal : an international review of spectroscopy and astronomical physics
10.1088/0004-637X/742/2/127
0004-637X
wos:2011-2013
127
WOS:000297211900067
Aliu, E (reprint author), Columbia Univ Barnard Coll, Dept Phys & Astron, New York, NY 10027 USA., afurniss@ucsc.edu; miki@ucolick.org; dpaneque@mppmu.mpg.de
US Department of Energy; NSERC in Canada; Science Foundation Ireland
(SFI ) [10/RFP/AST2748]; STFC in the UK; NASA [NNX10AF89G]; Fermi
[NNX09AU18G]; NSF [AST-0548180]; US National Science Foundation;
Smithsonian Institution
E. Aliu
T. Aune
M. Beilicke
W. Benbow
Markus Boettcher
A. Bouvier
S. M. Bradbury
J. H. Buckley
V. Bugaev
A. Cannon
A. Cesarini
L. Ciupik
M. P. Connolly
W. Cui
G. Decerprit
R. Dickherber
C. Duke
M. Errando
A. Falcone
Q. Feng
G. Finnegan
L. Fortson
A. Furniss
N. Galante
D. Gall
G. H. Gillanders
S. Godambe
S. Griffin
J. Grube
G. Gyuk
D. Hanna
B. Hivick
J. Holder
H. Huan
G. Hughes
C. M. Hui
T. B. Humensky
P. Kaaret
N. Karlsson
M. Kertzman
D. Kieda
H. Krawczynski
F. Krennrich
G. Maier
P. Majumdar
S. McArthur
A. McCann
P. Moriarty
R. Mukherjee
T. Nelson
R. A. Ong
M. Orr
A. N. Otte
N. Park
J. S. Perkins
A. Pichel
Martin Pohl
H. Prokoph
J. Quinn
K. Ragan
L. C. Reyes
P. T. Reynolds
E. Roache
H. J. Rose
J. Ruppel
D. B. Saxon
G. H. Sembroski
C. Skole
A. W. Smith
D. Staszak
G. Tesic
M. Theiling
S. Thibadeau
K. Tsurusaki
J. Tyler
A. Varlotta
V. V. Vassiliev
S. P. Wakely
T. C. Weekes
A. Weinstein
D. A. Williams
B. Zitzer
S. Ciprini
M. Fumagalli
K. Kaplan
D. Paneque
J. X. Prochaska
eng
uncontrolled
BL Lacertae objects: individual (RX J0648.7+1516, 1FGL J0648.8+1516, VER J0648+152)
eng
uncontrolled
gamma rays: galaxies
Institut für Physik und Astronomie
Referiert
38010
2014
2014
eng
9
1
783
article
IOP Publ. Ltd.
Bristol
1
--
--
--
Observations of the unidentified gamm-ray source TeV J2032+4130 BY Veritas
The astrophysical journal : an international review of spectroscopy and astronomical physics
10.1088/0004-637X/783/1/16
0004-637X
1538-4357
wos:2014
16
WOS:000334919600016
Aliu, E (reprint author), Columbia Univ Barnard Coll, Dept Phys & Astron, New York, NY 10027 USA., gareth.hughes@desy.de; pratik.majumdar@saha.ac.in
U.S. Department of Energy Office of Science; U.S. National Science
Foundation; Smithsonian Institution; NSERC in Canada; Science Foundation
Ireland [SFI 10/RFP/AST2748]; STFC in the U.K.; Young Investigators
Program of the Helmholtz Association; NASA [NNX09AC84G, NNX09AC81G]
E. Aliu
T. Aune
B. Behera
M. Beilicke
W. Benbow
K. Berger
R. Bird
J. H. Buckley
V. Bugaev
J. V. Cardenzana
M. Cerruti
X. Chen
L. Ciupik
M. P. Connolly
W. Cui
C. Duke
J. Dumm
M. Errando
A. Falcone
Simone Federici
Q. Feng
J. P. Finley
P. Fortin
L. Fortson
A. Furniss
N. Galante
G. H. Gillanders
S. Griffin
S. T. Griffiths
J. Grube
G. Gyuk
D. Hanna
J. Holder
G. Hughes
T. B. Humensky
P. Kaaret
Oleg Kargaltsev
M. Kertzman
Y. Khassen
D. Kieda
H. Krawczynski
M. J. Lang
A. S. Madhavan
G. Maier
P. Majumdar
A. McCann
P. Moriarty
R. Mukherjee
D. Nieto
R. A. Ong
A. N. Otte
D. Pandel
J. S. Perkins
Manuela Pohl
A. Popkow
H. Prokoph
J. Quinn
K. Ragan
J. Rajotte
L. C. Reyes
P. T. Reynolds
G. T. Richards
E. Roache
G. H. Sembroski
C. Skole
D. Staszak
Igor O. Telezhinsky
M. Theiling
J. V. Tucci
J. Tyler
A. Varlotta
S. Vincent
S. P. Wakely
T. C. Weekes
A. Weinstein
R. Welsing
D. A. Williams
B. Zitzer
eng
uncontrolled
gamma rays: general
eng
uncontrolled
pulsars: individual (PSR J2032+4127)
Institut für Physik und Astronomie
Referiert
35761
2012
2012
eng
7
1
754
article
IOP Publ. Ltd.
Bristol
1
--
--
--
Veritas observations of the nova in V407 CYGNI
We report on very high energy (E > 100 GeV) gamma-ray observations of V407 Cygni, a symbiotic binary that underwent a nova outburst producing 0.1-10 GeV gamma rays during 2010 March 10-26. Observations were made with the Very Energetic Radiation Imaging Telescope Array System during 2010 March 19-26 at relatively large zenith angles due to the position of V407 Cyg. An improved reconstruction technique for large zenith angle observations is presented and used to analyze the data. We do not detect V407 Cygni and place a differential upper limit on the flux at 1.6 TeV of 2.3 x 10(-12) erg cm(-2) s(-1) (at the 95% confidence level). When considered jointly with data from Fermi-LAT, this result places limits on the acceleration of very high energy particles in the nova.
The astrophysical journal : an international review of spectroscopy and astronomical physics
10.1088/0004-637X/754/1/77
0004-637X
wos:2011-2013
77
WOS:000306111800077
Aliu, E (reprint author), Columbia Univ, Dept Phys & Astron, Barnard Coll, New York, NY 10027 USA., daniel-d-gall@uiowa.edu; kazuma-tsurusaki@uiowa.edu
U.S. Department of Energy Office of Science; U.S. National Science
Foundation; Smithsonian Institution; NSERC in Canada; Science Foundation
Ireland [SFI 10/RFP/AST2748]; STFC in the UK
E. Aliu
S. Archambault
T. Arlen
T. Aune
M. Beilicke
W. Benbow
A. Bouvier
S. M. Bradbury
J. H. Buckley
V. Bugaev
K. Byrum
A. Cannon
A. Cesarini
L. Ciupik
E. Collins-Hughes
M. P. Connolly
W. Cui
G. Decerprit
R. Dickherber
C. Duke
J. Dumm
Vikram V. Dwarkadas
M. Errando
A. Falcone
Q. Feng
J. P. Finley
G. Finnegan
L. Fortson
A. Furniss
N. Galante
D. Gall
S. Godambe
S. Griffin
J. Grube
G. Gyuk
D. Hanna
J. Holder
H. Huan
G. Hughes
T. B. Humensky
P. Kaaret
N. Karlsson
M. Kertzman
Y. Khassen
D. Kieda
H. Krawczynski
F. Krennrich
M. J. Lang
K. Lee
G. Maier
P. Majumdar
S. McArthur
A. McCann
J. Millis
P. Moriarty
R. Mukherjee
P. D. Nunez
R. A. Ong
M. Orr
A. N. Otte
D. Pandel
N. Park
J. S. Perkins
M. Pohl
H. Prokoph
J. Quinn
K. Ragan
L. C. Reyes
P. T. Reynolds
E. Roache
H. J. Rose
J. Ruppel
D. B. Saxon
M. Schroedter
G. H. Sembroski
C. Skole
A. W. Smith
D. Staszak
Igor O. Telezhinsky
G. Tesic
M. Theiling
S. Thibadeau
K. Tsurusaki
J. Tyler
A. Varlotta
S. Vincent
M. Vivier
S. P. Wakely
J. E. Ward
T. C. Weekes
A. Weinstein
T. Weisgarber
R. Welsing
D. A. Williams
B. Zitzer
eng
uncontrolled
gamma rays: general
eng
uncontrolled
novae, cataclysmic variables
eng
uncontrolled
white dwarfs
Institut für Physik und Astronomie
Referiert
44871
2016
2016
eng
12
594
article
EDP Sciences
Les Ulis
Veritas Collaboration
1
--
--
--
Very high energy outburst of Markarian 501 in May 2009
The very high energy (VHE; E > 100 GeV) blazar Markarian 501 was observed between April 17 and May 5 (MJD 54 938-54 956), 2009, as part of an extensive multiwavelength campaign from radio to VHE. Strong VHE yray activity was detected on May 1st with Whipple and VERITAS, when the flux (E > 400 GeV) increased to 10 times the preflare baseline flux (3.9 x 10(-11) ph cm(-2) s(-1)), reaching five times the flux of the Crab Nebula. This coincided with a decrease in the optical polarization and a rotation of the polarization angle by 15. This VHE flare showed a fast flux variation with an increase of a factor similar to 4 in 25 min, and a falling time of similar to 50 min. We present the observations of the quiescent state previous to the flare and of the high state after the flare, focusing on the flux and spectral variability from Whipple, VERITAS, Fermi-LAT, RXTE, and Swift combined with optical and radio data.
Physical chemistry, chemical physics : a journal of European Chemical Societies
10.1051/0004-6361/201628744
1432-0746
wos2016:2019
A76
WOS:000385832200085
Pichel, A (reprint author), Inst Astron & Fis Espacio, Casilla Correo 67,Sucursal 28,C1428ZAA, Buenos Aires, DF, Argentina., anapichel@iafe.uba.ar
US Department of Energy Office of Science; US National Science Foundation; Smithsonian Institution; NSERC in Canada; South African Research Chairs Initiative (SARChI) by National Research Foundation; Department of Science and Technology of South Africa
importub
2020-03-22T13:48:01+00:00
filename=package.tar
9eac71db8d99b6f78ad5d64f40931fa9
E. Aliu
S. Archambault
A. Archer
T. Arlen
T. Aune
Anna Barnacka
B. Behera
M. Beilicke
W. Benbow
K. Berger
R. Bird
Markus Böttcher
A. Bouvier
M. Buchovecky
J. H. Buckley
V. Bugaev
J. V. Cardenzana
M. Cerruti
A. Cesarini
Xuhui Chen
L. Ciupik
E. Collins-Hughes
M. P. Connolly
W. Cui
J. Dumm
J. D. Eisch
A. Falcone
Simone Federici
Q. Feng
J. P. Finley
H. Fleischhack
P. Fortin
L. Fortson
A. Furniss
N. Galante
D. Gall
G. H. Gillanders
S. Griffin
S. T. Griffiths
J. Grube
G. Gyuk
M. Hütten
Nils Hakansson
J. Holder
G. Hughes
T. B. Humensky
C. A. Johnson
P. Kaaret
P. Kar
N. Kelley-Hoskins
M. Kertzman
Y. Khassen
D. Kieda
M. Krause
H. Krawczynski
F. Krennrich
M. J. Lang
A. S. Madhavan
G. Maier
S. McArthur
A. McCann
K. Meagher
J. Millis
P. Moriarty
R. Mukherjee
D. Nieto
R. A. Ong
M. Orr
A. N. Otte
D. Pandel
N. Park
V. Pelassa
J. S. Perkins
A. Pichel
Martin Pohl
A. Popkow
J. Quinn
K. Ragan
L. C. Reyes
P. T. Reynolds
E. Roache
J. Rousselle
A. C. Rovero
D. B. Saxon
G. H. Sembroski
K. Shahinyan
F. Sheidaei
C. Skole
A. W. Smith
D. Staszak
Igor O. Telezhinsky
M. Theiling
N. W. Todd
J. V. Tucci
J. Tyler
A. Varlotta
V. V. Vassiliev
S. Vincent
S. P. Wakely
O. M. Weiner
A. Weinstein
R. Welsing
Alina Wilhelm
D. A. Williams
B. Zitzer
M. G. Baring
J. Becerra Gonzalez
A. N. Cillis
D. Horan
D. Paneque
eng
uncontrolled
BL Lacertae objects: individual: Mrk 501
eng
uncontrolled
gamma rays: galaxies
Institut für Physik und Astronomie
Referiert
Import
34727
2013
2013
eng
8
1
775
article
IOP Publ. Ltd.
Bristol
1
--
--
--
Multiwavelenght observations and modeling of 1ES 1959+650 in a low flux state
We report on the VERITAS observations of the high-frequency peaked BL Lac object 1ES 1959+650 in the period 2007-2011. This source is detected at TeV energies by VERITAS at 16.4 standard deviation (sigma) significance in 7.6 hr of observation in a low flux state. A multiwavelength spectral energy distribution (SED) is constructed from contemporaneous data from VERITAS, Fermi-LAT, RXTE PCA, and Swift UVOT. Swift XRT data is not included in the SED due to a lack of simultaneous observations with VERITAS. In contrast to the orphan gamma-ray flare exhibited by this source in 2002, the X-ray flux of the source is found to vary by an order of magnitude, while other energy regimes exhibit less variable emission. A quasi-equilibrium synchrotron self-Compton model with an additional external radiation field is used to describe three SEDs corresponding to the lowest, highest, and average X-ray states. The variation in the X-ray spectrum is modeled by changing the electron injection spectral index, with minor adjustments of the kinetic luminosity in electrons. This scenario produces small-scale flux variability of the order of less than or similar to 2 in the high energy (E > 1MeV) and very high energy (E > 100 GeV) gamma-ray regimes, which is corroborated by the Fermi-LAT, VERITAS, and Whipple 10 m telescope light curves.
The astrophysical journal : an international review of spectroscopy and astronomical physics
10.1088/0004-637X/775/1/3
0004-637X
wos:2011-2013
3
WOS:000324615800003
Aliu, E (reprint author), Columbia Univ Barnard Coll, Dept Phys & Astron, New York, NY 10027 USA.
U.S. Department of Energy Office of Science; U.S. National Science
Foundation; Smithsonian Institution; NARC'S in Canada; Science
Foundation Ireland [SFI 10/RFP/AST2748]; STFC in the U.K.; Irish
Research Council "Embark Initiative"
E. Aliu
S. Archambault
T. Arlen
T. Aune
M. Beilicke
W. Benbow
R. Bird
Markus Boettcher
A. Bouvier
V. Bugaev
K. Byrum
A. Cesarini
L. Ciupik
E. Collins-Hughes
M. P. Connolly
W. Cui
R. Dickherber
C. Duke
J. Dumm
M. Errando
A. Falcone
Simone Federici
Q. Feng
J. P. Finley
G. Finnegan
L. Fortson
A. Furniss
N. Galante
D. Gall
G. H. Gillanders
S. Griffin
J. Grube
G. Gyuk
D. Hanna
J. Holder
G. Hughes
T. B. Humensky
P. Kaaret
M. Kertzman
Y. Khassen
D. Kieda
H. Krawczynski
F. Krennrich
M. J. Lang
A. S. Madhavan
G. Maier
P. Majumdar
S. McArthur
A. McCann
P. Moriarty
R. Mukherjee
T. Nelson
A. O'Faolain de Bhroithe
R. A. Ong
M. Orr
A. N. Otte
N. Park
J. S. Perkins
A. Pichel
Martin Pohl
A. Popkow
H. Prokoph
J. Quinn
K. Ragan
L. C. Reyes
P. T. Reynolds
E. Roache
D. B. Saxon
M. Schroedter
G. H. Sembroski
C. Skole
A. W. Smith
D. Staszak
Igor O. Telezhinsky
M. Theiling
J. Tyler
A. Varlotta
V. V. Vassiliev
S. P. Wakely
T. C. Weekes
A. Weinstein
R. Welsing
D. A. Williams
B. Zitzer
eng
uncontrolled
BL Lacertae objects: general
eng
uncontrolled
BL Lacertae objects: individual (1ES 1959+650=VER J1959+651)
eng
uncontrolled
galaxies: active
eng
uncontrolled
gamma rays: galaxies
Institut für Physik und Astronomie
Referiert
34931
2013
2013
eng
7
2
770
article
IOP Publ. Ltd.
Bristol
1
--
--
--
Discovery of TeV Gamma-Ray emission toward supernova remnant SNR G78.2+2.1
We report the discovery of an unidentified, extended source of very-high-energy gamma-ray emission, VER J2019+407, within the radio shell of the supernova remnant SNR G78.2+2.1, using 21.4 hr of data taken by the VERITAS gamma-ray observatory in 2009. These data confirm the preliminary indications of gamma-ray emission previously seen in a two-year (2007-2009) blind survey of the Cygnus region by VERITAS. VER J2019+407, which is detected at a post-trials significance of 7.5 standard deviations in the 2009 data, is localized to the northwestern rim of the remnant in a region of enhanced radio and X-ray emission. It has an intrinsic extent of 0 degrees.23 +/- 0 degrees.03(stat-0 degrees.02sys)(+0 degrees.04) and its spectrum is well-characterized by a differential power law (dN/dE = N-0 x (E/TeV)-Gamma) with a photon index of Gamma = 2.37 +/- 0.14(stat) +/- 0.20(sys) and a flux normalization of N-0 = 1.5 +/- 0.2(stat) +/- 0.4(sys) x 10(-12) photon TeV-1 cm(-2) s(-1). This yields an integral flux of 5.2 +/- 0.8(stat) +/- 1.4(sys) x 10(-12) photon cm(-2) s(-1) above 320 GeV, corresponding to 3.7% of the Crab Nebula flux. We consider the relationship of the TeV gamma-ray emission with the GeV gamma-ray emission seen from SNR G78.2+2.1 as well as that seen from a nearby cocoon of freshly accelerated cosmic rays. Multiple scenarios are considered as possible origins for the TeV gamma-ray emission, including hadronic particle acceleration at the SNR shock.
The astrophysical journal : an international review of spectroscopy and astronomical physics
10.1088/0004-637X/770/2/93
0004-637X
wos:2011-2013
93
WOS:000320111200011
Aliu, E (reprint author), Columbia Univ Barnard Coll, Dept Phys & Astron, New York, NY 10027 USA., amandajw@iastate.edu
U.S. Department of Energy Office of Science; U.S. National Science
Foundation; Smithsonian Institution; NSERC in Canada; Science Foundation
Ireland [SFI 10/RFP/AST2748]; Science and Technology Facilities Council
in the UK; NASA [NNX11A086G]
E. tAliu
S. Archambault
T. Arlen
T. Aune
M. Beilicke
W. Benbow
R. Bird
A. Bouvier
S. M. Bradbury
J. H. Buckley
V. Bugaev
K. Byrum
A. Cannon
A. Cesarini
L. Ciupik
E. Collins-Hughes
M. P. Connolly
W. Cui
R. Dickherber
C. Duke
J. Dumm
Vikram V. Dwarkadas
M. Errando
A. Falcone
Simone Federici
Q. Feng
J. P. Finley
G. Finnegan
L. Fortson
A. Furniss
N. Galante
D. Gall
G. H. Gillanders
S. Godambe
E. V. Gotthelf
S. Griffin
J. Grube
G. Gyuk
D. Hanna
J. Holder
H. Huan
G. Hughes
T. B. Humensky
P. Kaaret
N. Karlsson
M. Kertzman
Y. Khassen
D. Kieda
H. Krawczynski
F. Krennrich
M. J. Lang
K. Lee
A. S. Madhavan
G. Maier
P. Majumdar
S. McArthur
A. McCann
J. Millis
P. Moriarty
R. Mukherjee
T. Nelson
A. O'Faolain de Bhroithe
R. A. Ong
M. Orr
A. N. Otte
D. Pandel
N. Park
J. S. Perkins
Martin Pohl
A. Popkow
H. Prokoph
J. Quinn
K. Ragan
L. C. Reyes
P. T. Reynolds
E. Roache
H. J. Rose
Jens Ruppel
D. B. Saxon
M. Schroedter
G. H. Sembroski
G. D. Sentuerk
C. Skole
Igor O. Telezhinsky
G. Tesic
M. Theiling
S. Thibadeau
K. Tsurusaki
J. Tyler
A. Varlotta
V. V. Vassiliev
S. Vincent
S. P. Wakely
J. E. Ward
T. C. Weekes
A. Weinstein
T. Weisgarber
R. Welsing
D. A. Williams
B. Zitzer
eng
uncontrolled
acceleration of particles
eng
uncontrolled
cosmic rays
eng
uncontrolled
gamma rays: general
eng
uncontrolled
ISM: supernova remnants
Institut für Physik und Astronomie
Referiert
34509
2013
2013
eng
9
2
779
article
IOP Publ. Ltd.
Bristol
VERITAS Collaboration
1
--
--
--
Long term observations of B2 1215+30 with veritas
We report on VERITAS observations of the BL Lac object B2 1215+30 between 2008 and 2012. During this period, the source was detected at very high energies (VHEs; E > 100 GeV) by VERITAS with a significance of 8.9s and showed clear variability on timescales larger than months. In 2011, the source was found to be in a relatively bright state and a power-law fit to the differential photon spectrum yields a spectral index of 3.6 +/- 0.4(stat) +/- 0.3(syst) with an integral flux above 200 GeV of (8.0 +/- 0.9(stat) +/- 3.2(syst)) x 10(-12) cm(-2) s(-1). No short term variability could be detected during the bright state in 2011. Multi-wavelength data were obtained contemporaneously with the VERITAS observations in 2011 and cover optical (Super-LOTIS, MDM, Swift/UVOT), X-ray (Swift/XRT), and gamma-ray (Fermi-LAT) frequencies. These were used to construct the spectral energy distribution (SED) of B2 1215+30. A one-zone leptonic model is used to model the blazar emission and the results are compared to those of MAGIC from early 2011 and other VERITAS-detected blazars. The SED can be reproduced well with model parameters typical for VHE-detected BL Lac objects.
The astrophysical journal : an international review of spectroscopy and astronomical physics
10.1088/0004-637X/779/2/92
0004-637X
1538-4357
wos:2011-2013
92
WOS:000328187200002
Aliu, E (reprint author), Columbia Univ Barnard Coll, Dept Phys & Astron, New York, NY 10027 USA., heike.prokoph@desy.de
U.S. Department of Energy Office of Science; U.S. National Science
Foundation; Smithsonian Institution; NSERC in Canada; Science Foundation
Ireland [SFI 10/RFP/AST2748]; STFC in the U.K.; NASA Swift Guest
Investigator program [NNX12AJ12G]; Helmholtz Association; South African
Research Chairs Initiative of the Department of Science and Technology;
National Research Foundation of South Africa; NASA through Hubble
Fellowship grant [HF-51305.01-A]; Space Telescope Science Institute;
NASA [NAS 5-26555]
E. Aliu
S. Archambault
T. Arlen
T. Aune
M. Beilicke
W. Benbow
R. Bird
A. Bouvier
J. H. Buckley
V. Bugaev
A. Cesarini
L. Ciupik
M. P. Connolly
W. Cui
J. Dumm
M. Errando
A. Falcone
Simone Federici
Q. Feng
J. P. Finley
P. Fortin
L. Fortson
A. Furniss
N. Galante
L. Gerard
G. H. Gillanders
S. Griffin
J. Grube
G. Gyuk
D. Hanna
J. Holder
G. Hughes
T. B. Humensky
P. Kaaret
M. Kertzman
Y. Khassen
D. Kieda
H. Krawczynski
F. Krennrich
M. J. Lang
A. S. Madhavan
G. Maier
P. Majumdar
S. McArthur
A. McCann
P. Moriarty
R. Mukherjee
D. Nieto
A. O'Faolain De Bhroithe
R. A. Ong
M. Orr
A. N. Otte
N. Park
J. S. Perkins
Martin Pohl
A. Popkow
H. Prokoph
J. Quinn
K. Ragan
L. C. Reyes
P. T. Reynolds
G. T. Richards
E. Roache
D. B. Saxon
G. H. Sembroski
C. Skole
A. W. Smith
M. Soares-Furtado
D. Staszak
Igor O. Telezhinsky
G. Tesic
M. Theiling
A. Varlotta
V. V. Vassiliev
S. Vincent
S. P. Wakely
T. C. Weekes
A. Weinstein
R. Welsing
D. A. Williams
B. Zitzer
Markus Böttcher
M. Fumagalli
J. Jadhav
eng
uncontrolled
BL Lacertae objects: general
eng
uncontrolled
BL Lacertae objects: individual (B2 1215+30, VER J1217+301)
35614
2012
2012
eng
14
2
757
article
IOP Publ. Ltd.
Bristol
1
--
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Constraints on cosmic rays, magnetic fields, and dark matter fromgamma-ray observations of the coma cluster of galaxies with veritas and fermi
Observations of radio halos and relics in galaxy clusters indicate efficient electron acceleration. Protons should likewise be accelerated and, on account of weak energy losses, can accumulate, suggesting that clusters may also be sources of very high energy (VHE; E > 100 GeV) gamma-ray emission. We report here on VHE gamma-ray observations of the Coma galaxy cluster with the VERITAS array of imaging Cerenkov telescopes, with complementing Fermi Large Area Telescope observations at GeV energies. No significant gamma-ray emission from the Coma Cluster was detected. Integral flux upper limits at the 99% confidence level were measured to be on the order of (2-5) x 10(-8) photonsm(-2) s(-1) (VERITAS, >220 GeV) and similar to 2 x 10(-6) photonsm(-2) s(-1) (Fermi, 1-3GeV), respectively. We use the gamma-ray upper limits to constrain cosmic rays (CRs) and magnetic fields in Coma. Using an analytical approach, the CR-to-thermal pressure ratio is constrained to be < 16% from VERITAS data and <1.7% from Fermi data (averaged within the virial radius). These upper limits are starting to constrain the CR physics in self-consistent cosmological cluster simulations and cap the maximum CR acceleration efficiency at structure formation shocks to be <50%. Alternatively, this may argue for non-negligible CR transport processes such as CR streaming and diffusion into the outer cluster regions. Assuming that the radio-emitting electrons of the Coma halo result from hadronic CR interactions, the observations imply a lower limit on the central magnetic field in Coma of similar to(2-5.5) mu G, depending on the radial magnetic field profile and on the gamma-ray spectral index. Since these values are below those inferred by Faraday rotation measurements in Coma (for most of the parameter space), this renders the hadronic model a very plausible explanation of the Coma radio halo. Finally, since galaxy clusters are dark matter (DM) dominated, the VERITAS upper limits have been used to place constraints on the thermally averaged product of the total self-annihilation cross section and the relative velocity of the DM particles, <sigma nu >.
The astrophysical journal : an international review of spectroscopy and astronomical physics
10.1088/0004-637X/757/2/123
0004-637X
wos:2011-2013
123
WOS:000309108500016
Arlen, T (reprint author), Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA., pohlmadq@gmail.com; christoph.pfrommer@h-its.org
U.S. Department of Energy Office of Science; U.S. National Science
Foundation; Smithsonian Institution; NSERC in Canada; Science Foundation
Ireland [SFI 10/RFP/AST2748]; STFC in the U.K; National Aeronautics and
Space Administration; Department of Energy in the United States;
Commissariat a l'Energie Atomique; Centre National de la Recherche
Scientifique/Institut National de Physique Nucleaire et de Physique des
Particules in France; Agenzia Spaziale Italiana; Istituto Nazionale di
Fisica Nucleare in Italy; Ministry of Education, Culture, Sports,
Science and Technology (MEXT); High Energy Accelerator Research
Organization (KEK); Japan Aerospace Exploration Agency (JAXA) in Japan;
K. A. Wallenberg Foundation; Swedish Research Council; Swedish National
Space Board in Sweden; Istituto Nazionale di Astrofisica in Italy;
Centre National d'Etudes Spatiales in France; Klaus Tschira Foundation;
NSF [AST-0908480]
T. Arlen
T. Aune
M. Beilicke
W. Benbow
A. Bouvier
J. H. Buckley
V. Bugaev
K. Byrum
A. Cannon
A. Cesarini
L. Ciupik
E. Collins-Hughes
M. P. Connolly
W. Cui
R. Dickherber
J. Dumm
A. Falcone
S. Federici
Q. Feng
J. P. Finley
G. Finnegan
L. Fortson
A. Furniss
N. Galante
D. Gall
S. Godambe
S. Griffin
J. Grube
G. Gyuk
J. Holder
H. Huan
G. Hughes
T. B. Humensky
A. Imran
P. Kaaret
N. Karlsson
M. Kertzman
Y. Khassen
D. Kieda
H. Krawczynski
F. Krennrich
K. Lee
A. S. Madhavan
G. Maier
P. Majumdar
S. McArthur
A. McCann
P. Moriarty
R. Mukherjee
T. Nelson
A. O'Faolain de Bhroithe
R. A. Ong
M. Orr
A. N. Otte
N. Park
J. S. Perkins
Martin Pohl
H. Prokoph
J. Quinn
K. Ragan
L. C. Reyes
P. T. Reynolds
E. Roache
J. Ruppel
D. B. Saxon
M. Schroedter
G. H. Sembroski
C. Skole
A. W. Smith
Igor O. Telezhinsky
G. Tesic
M. Theiling
S. Thibadeau
K. Tsurusaki
A. Varlotta
M. Vivier
S. P. Wakely
J. E. Ward
A. Weinstein
R. Welsing
D. A. Williams
B. Zitzer
C. Pfrommer
A. Pinzke
eng
uncontrolled
cosmic rays
eng
uncontrolled
dark matter
eng
uncontrolled
galaxies: clusters: general
eng
uncontrolled
galaxies: clusters: individual (Coma (ACO 1656))
eng
uncontrolled
gamma rays: galaxies: clusters
eng
uncontrolled
magnetic fields
Institut für Physik und Astronomie
Referiert
36045
2012
2012
eng
12
6
85
article
American Physical Society
College Park
1
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VERITAS deep observations of the dwarf spheroidal galaxy Segue 1
The VERITAS array of Cherenkov telescopes has carried out a deep observational program on the nearby dwarf spheroidal galaxy Segue 1. We report on the results of nearly 48 hours of good quality selected data, taken between January 2010 and May 2011. No significant gamma-ray emission is detected at the nominal position of Segue 1, and upper limits on the integrated flux are derived. According to recent studies, Segue 1 is the most dark matter-dominated dwarf spheroidal galaxy currently known. We derive stringent bounds on various annihilating and decaying dark matter particle models. The upper limits on the velocity-weighted annihilation cross-section are <sigma upsilon >(95%) (CL) less than or similar to 10(-23) cm(3) s(-1), improving our limits from previous observations of dwarf spheroidal galaxies by at least a factor of 2 for dark matter particle masses m(chi) greater than or similar to 300 GeV. The lower limits on the decay lifetime are at the level of tau(95%) (CL) greater than or similar to 10(24) s. Finally, we address the interpretation of the cosmic ray lepton anomalies measured by ATIC and PAMELA in terms of dark matter annihilation, and show that the VERITAS observations of Segue 1 disfavor such a scenario.
Physical review : D, Particles, fields, gravitation, and cosmology
10.1103/PhysRevD.85.062001
1550-7998
wos:2011-2013
062001
WOS:000301117000003
Vivier, M (reprint author), Univ Delaware, Dept Phys & Astron, Newark, DE 19716 USA., mvivier@bartol.udel.edu
US Department of Energy Office of Science; US National Science
Foundation; Smithsonian Institution; NSERC in Canada; Science Foundation
Ireland [SFI 10/RFP/AST2748]; STFC in the United Kingdom
E. Aliu
S. Archambault
T. Arlen
T. Aune
M. Beilicke
W. Benbow
A. Bouvier
S. M. Bradbury
J. H. Buckley
V. Bugaev
K. Byrum
A. Cannon
A. Cesarini
J. L. Christiansen
L. Ciupik
E. Collins-Hughes
M. P. Connolly
W. Cui
G. Decerprit
R. Dickherber
J. Dumm
M. Errando
A. Falcone
Q. Feng
F. Ferrer
J. P. Finley
G. Finnegan
L. Fortson
A. Furniss
N. Galante
D. Gall
S. Godambe
S. Griffin
J. Grube
G. Gyuk
D. Hanna
J. Holder
H. Huan
G. Hughes
T. B. Humensky
P. Kaaret
N. Karlsson
M. Kertzman
Y. Khassen
D. Kieda
H. Krawczynski
F. Krennrich
K. Lee
A. S. Madhavan
G. Maier
P. Majumdar
S. McArthur
A. McCann
P. Moriarty
R. Mukherjee
R. A. Ong
M. Orr
A. N. Otte
N. Park
J. S. Perkins
Martin Pohl
H. Prokoph
J. Quinn
K. Ragan
L. C. Reyes
P. T. Reynolds
E. Roache
H. J. Rose
J. Ruppel
D. B. Saxon
M. Schroedter
G. H. Sembroski
G. D. Sentuerk
C. Skole
A. W. Smith
D. Staszak
Igor O. Telezhinsky
G. Tesic
M. Theiling
S. Thibadeau
K. Tsurusaki
A. Varlotta
V. V. Vassiliev
S. Vincent
M. Vivier
R. G. Wagner
S. P. Wakely
J. E. Ward
T. C. Weekes
A. Weinstein
T. Weisgarber
D. A. Williams
B. Zitzer
Institut für Physik und Astronomie
Referiert
36605
2011
2011
eng
5
2
738
article
IOP Publ. Ltd.
Bristol
1
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Veritas observations of unusual extragalactic transient swift J164449.3+573451
We report on very high energy (>100 GeV) gamma-ray observations of Swift J164449.3+573451, an unusual transient object first detected by the Swift Observatory and later detected by multiple radio, optical, and X-ray observatories. A total exposure of 28 hr was obtained on Swift J164449.3+573451 with the Very Energetic Radiation Imaging Telescope Array System ( VERITAS) during 2011 March 28-April 15. We do not detect the source and place a differential upper limit on the emission at 500 GeV during these observations of 1.4 x 10(-12) erg cm(-2) s(-1) (99% confidence level). We also present time-resolved upper limits and use a flux limit averaged over the X-ray flaring period to constrain various emission scenarios that can accommodate both the radio-through-X-ray emission detected from the source and the lack of detection by VERITAS.
The astrophysical journal : an international review of spectroscopy and astronomical physics ; Part 2, Letters
10.1088/2041-8205/738/2/L30
2041-8205
wos:2011-2013
L30
WOS:000294760700014
Aliu, E (reprint author), Columbia Univ Barnard Coll, Dept Phys & Astron, New York, NY 10027 USA., apbouvie@ucsc.edu; boettchm@ohio.edu; daniel-d-gall@uiowa.edu
U.S. Department of Energy; U.S. National Science Foundation; Smithsonian
Institution; NSERC in Canada; Science Foundation Ireland (SFI)
[10/RFP/AST2748]; STFC in the UK
E. Aliu
T. Arlen
T. Aune
M. Beilicke
W. Benbow
Markus Boettcher
A. Bouvier
S. M. Bradbury
J. H. Buckley
V. Bugaev
A. Cannon
A. Cesarini
L. Ciupik
E. Collins-Hughes
M. P. Connolly
W. Cui
R. Dickherber
M. Errando
A. Falcone
J. P. Finley
L. Fortson
A. Furniss
N. Galante
D. Gall
G. H. Gillanders
S. Godambe
S. Griffin
J. Grube
G. Gyuk
D. Hanna
J. Holder
H. Huan
G. Hughes
C. M. Hui
T. B. Humensky
P. Kaaret
N. Karlsson
M. Kertzman
D. Kieda
H. Krawczynski
F. Krennrich
A. S. Madhavan
G. Maier
P. Majumdar
S. McArthur
A. McCann
P. Moriarty
R. Mukherjee
R. A. Ong
M. Orr
A. N. Otte
N. Park
J. S. Perkins
A. Pichel
Martin Pohl
H. Prokoph
J. Quinn
K. Ragan
L. C. Reyes
P. T. Reynolds
E. Roache
H. J. Rose
J. Ruppel
D. B. Saxon
M. Schroedter
G. H. Sembroski
C. Skole
A. W. Smith
D. Staszak
G. Tesic
M. Theiling
S. Thibadeau
K. Tsurusaki
J. Tyler
A. Varlotta
S. Vincent
M. Vivier
S. P. Wakely
J. E. Ward
A. Weinstein
T. Weisgarber
D. A. Williams
eng
uncontrolled
accretion, accretion disks
eng
uncontrolled
galaxies: active
eng
uncontrolled
gamma rays: galaxies
eng
uncontrolled
radiation mechanisms: non-thermal
Institut für Physik und Astronomie
Referiert
34523
2013
2013
eng
7
1
779
article
IOP Publ. Ltd.
Bristol
1
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Multiwavelemght oservatons of the TeV binary LS I+61 degrees 303 with veritas, fermi-lat, and swift/XRT during a TeV outburst
We present the results of a multiwavelength observational campaign on the TeV binary system LS I +61 degrees 303 with the VERITAS telescope array (>200 GeV), Fermi-LAT (0.3-300 GeV), and Swift/XRT (2-10 keV). The data were taken from 2011 December through 2012 January and show a strong detection in all three wavebands. During this period VERITAS obtained 24.9 hr of quality selected livetime data in which LS I +61 degrees 303 was detected at a statistical significance of 11.9 sigma. These TeV observations show evidence for nightly variability in the TeV regime at a post-trial significance of 3.6 sigma. The combination of the simultaneously obtained TeV and X-ray fluxes do not demonstrate any evidence for a correlation between emission in the two bands. For the first time since the launch of the Fermi satellite in 2008, this TeV detection allows the construction of a detailed MeV-TeV spectral energy distribution from LS I +61 degrees 303. This spectrum shows a distinct cutoff in emission near 4 GeV, with emission seen by the VERITAS observations following a simple power-law above 200 GeV. This feature in the spectrum of LS I +61 degrees 303, obtained from overlapping observations with Fermi-LAT and VERITAS, may indicate that there are two distinct populations of accelerated particles producing the GeV and TeV emission.
The astrophysical journal : an international review of spectroscopy and astronomical physics
10.1088/0004-637X/779/1/88
0004-637X
1538-4357
wos:2011-2013
WOS:000328160100088
Aliu, E (reprint author), Columbia Univ, Dept Phys, 538 W 120th St, New York, NY 10027 USA., sheidaei@physics.utah.edu; aw.smith@utah.edu
U.S. Department of Energy Office of Science; U.S. National Science
Foundation; Smithsonian Institution; NSERC in Canada; Science Foundation
Ireland [SFI 10/RFP/AST2748]; STFC in the U.K.
E. Aliu
S. Archambault
B. Behera
K. Berger
M. Beilicke
W. Benbow
R. Bird
A. Bouvier
V. Bugaev
M. Cerruti
Xuhui Chen
L. Ciupik
M. P. Connolly
W. Cui
J. Dumm
A. Falcone
Simone Federici
Q. Feng
J. P. Finley
P. Fortin
L. Fortson
A. Furniss
N. Galante
G. H. Gillanders
S. Griffin
S. T. Griffiths
J. Grube
G. Gyuk
D. Hanna
J. Holder
G. Hughes
T. B. Humensky
P. Kaaret
M. Kertzman
Y. Khassen
D. Kieda
F. Krennrich
M. J. Lang
G. Maier
P. Majumdar
S. McArthur
A. McCann
P. Moriarty
R. Mukherjee
A. O'Faolain de Bhroithe
R. A. Ong
A. N. Otte
N. Park
J. S. Perkins
Martin Pohl
A. Popkow
H. Prokoph
J. Quinn
K. Ragan
J. Rajotte
G. Ratliff
P. T. Reynolds
G. T. Richards
E. Roache
G. H. Sembroski
F. Sheidaei
C. Skole
A. W. Smith
D. Staszak
Igor O. Telezhinsky
J. Tyler
A. Varlotta
S. Vincent
S. P. Wakely
T. C. Weekes
A. Weinstein
R. Welsing
A. Zajczyk
B. Zitzer
eng
uncontrolled
acceleration of particles
eng
uncontrolled
binaries: general
eng
uncontrolled
gamma rays: stars
eng
uncontrolled
relativistic processes
eng
uncontrolled
X-rays: binaries
Institut für Physik und Astronomie
Referiert
37769
2014
2014
eng
9
2
788
article
IOP Publ. Ltd.
Bristol
1
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Test of models of the cosmic infrared background with multiwavelength observations of the blazar 1ES 1218+30.4 IN 2009
We present the results of a multi-wavelength campaign targeting the blazar 1ES 1218+30.4 with observations with the 1.3 m McGraw-Hill optical telescope, the Rossi X-ray Timing Explorer (RXTE), the Fermi Gamma-Ray Space Telescope, and the Very Energetic Radiation Imaging Telescope Array System (VERITAS). The RXTE and VERITAS observations were spread over a 13 day period and revealed clear evidence for flux variability, and a strong X-ray and gamma-ray flare on 2009 February 26 (MJD 54888). The campaign delivered a well-sampled broadband energy spectrum with simultaneous RXTE and VERITAS very high energy (VHE, > 100 GeV) observations, as well as contemporaneous optical and Fermi observations. The 1ES 1218+30.4 broadband energy spectrum-the first with simultaneous X-ray and VHE gamma-ray energy spectra-is of particular interest as the source is located at a high cosmological redshift for a VHE source (z = 0.182), leading to strong absorption of VHE gamma rays by photons from the optical/infrared extragalactic background light (EBL) via gamma VHE +gamma EBL -> e(+) e(-)pair-creation processes. We model the data with a one-zone synchrotron self-Compton (SSC) emission model and with the extragalactic absorption predicted by several recent EBL models. We find that the observations are consistent with the SSC scenario and all the EBL models considered in this work. We discuss observational and theoretical avenues to improve on the EBL constraints.
The astrophysical journal : an international review of spectroscopy and astronomical physics
10.1088/0004-637X/788/2/158
0004-637X
1538-4357
wos:2014
158
WOS:000337466200061
Archambault, S (reprint author), McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada.
U.S. Department of Energy Office of Science; U.S. National Science
Foundation; Smithsonian Institution; NSERC in Canada; Science Foundation
Ireland [SFI 10/RFP/AST2748]; STFC in the U.K
S. Archambault
T. Arlen
T. Aune
M. Beilicke
W. Benbow
R. Bird
Markus Boettcher
A. Bouvier
J. H. Buckley
V. Bugaev
L. Ciupik
E. Collins-Hughes
M. P. Connolly
W. Cui
R. Dickherber
J. Dumm
M. Errando
A. Falcone
Simone Federici
Q. Feng
J. P. Finley
L. Fortson
A. Furniss
N. Galante
D. Gall
A. III. Garson
G. H. Gillanders
S. Griffin
J. Grube
C. Gusbar
G. Gyuk
D. Hanna
J. Holder
G. Hughes
P. Kaaret
M. Kertzman
Y. Khassen
D. Kieda
H. Krawczynski
A. Lamerato
M. J. Lang
K. Li
A. S. Madhavan
G. Maier
P. Majumdar
S. McArthur
A. McCann
J. Millis
P. Moriarty
R. Mukherjee
D. Nieto
R. A. Ong
M. Orr
A. N. Otte
N. Park
J. S. Perkins
Martin Pohl
A. Popkow
H. Prokoph
J. Quinn
K. Ragan
P. T. Reynolds
G. T. Richards
E. Roache
P. Roustazadeh
D. B. Saxon
G. H. Sembroski
G. D. Senturk
C. Skole
D. Staszak
Igor O. Telezhinsky
G. Tesic
M. Theiling
A. Varlotta
V. V. Vassiliev
S. Vincent
S. P. Wakely
A. Weinstein
R. Welsing
D. A. Williams
B. Zitzer
eng
uncontrolled
BL Lacertae objects: general
eng
uncontrolled
BL Lacertae objects: individual (1ES1218+30.4)
eng
uncontrolled
cosmic background radiation
eng
uncontrolled
diffuse radiation
eng
uncontrolled
galaxies: jets
eng
uncontrolled
gamma rays: galaxies
Institut für Physik und Astronomie
Referiert