Dokument-ID Dokumenttyp Verfasser/Autoren Herausgeber Haupttitel Abstract Auflage Verlagsort Verlag Erscheinungsjahr Seitenzahl Schriftenreihe Titel Schriftenreihe Bandzahl ISBN Quelle der Hochschulschrift Konferenzname Quelle:Titel Quelle:Jahrgang Quelle:Heftnummer Quelle:Erste Seite Quelle:Letzte Seite URN DOI Abteilungen OPUS4-39195 Wissenschaftlicher Artikel Abramowski, Attila; Aharonian, Felix A.; Benkhali, Faical Ait; Akhperjanian, A. G.; Angüner, Ekrem Oǧuzhan; Anton, Gisela; Backes, Michael; Balenderan, Shangkari; Balzer, Arnim; Barnacka, Anna; Becherini, Yvonne; Tjus, J. Becker; Bernlöhr, K.; Birsin, E.; Bissaldi, E.; Biteau, Jonathan; Boettcher, Markus; Boisson, Catherine; Bolmont, J.; Bordas, Pol; Brucker, J.; Brun, Francois; Brun, Pierre; Bulik, Tomasz; Carrigan, Svenja; Casanova, Sabrina; Chadwick, Paula M.; Chalme-Calvet, R.; Chaves, Ryan C. G.; Cheesebrough, A.; Chretien, M.; Colafrancesco, Sergio; Cologna, Gabriele; Conrad, Jan; Couturier, C.; Cui, Y.; Dalton, M.; Daniel, M. K.; Davids, I. D.; Degrange, B.; Deil, C.; deWilt, P.; Dickinson, H. J.; Djannati-Ataï, A.; Domainko, W.; Dubus, G.; Dutson, K.; Dyks, J.; Dyrda, M.; Edwards, T.; Egberts, Kathrin; Eger, P.; Espigat, P.; Farnier, C.; Fegan, S.; Feinstein, F.; Fernandes, M. V.; Fernandez, D.; Fiasson, A.; Fontaine, G.; Foerster, A.; Füßling, Matthias; Gajdus, M.; Gallant, Y. A.; Garrigoux, T.; Giavitto, G.; Giebels, B.; Glicenstein, J. F.; Grondin, M. -H.; Grudzinska, M.; Haeffner, S.; Hahn, J.; Harris, J.; Heinzelmann, G.; Henri, G.; Hermann, G.; Hervet, O.; Hillert, A.; Hinton, James Anthony; Hofmann, W.; Hofverberg, P.; Holler, Markus; Horns, D.; Jacholkowska, A.; Jahn, C.; Jamrozy, M.; Janiak, M.; Jankowsky, F.; Jung, I.; Kastendieck, M. A.; Katarzynski, K.; Katz, U.; Kaufmann, S.; Khelifi, B.; Kieffer, M.; Klepser, S.; Klochkov, D.; Kluzniak, W.; Kneiske, T.; Kolitzus, D.; Komin, Nu.; Kosack, K.; Krakau, S.; Krayzel, F.; Krueger, P. P.; Laffon, H.; Lamanna, G.; Lefaucheur, J.; Lemiere, A.; Lemoine-Goumard, M.; Lenain, J. -P.; Lohse, T.; Lopatin, A.; Lu, C. -C.; Marandon, V.; Marcowith, A.; Marx, R.; Maurin, G.; Maxted, N.; Mayer, Markus; McComb, T. J. L.; Mehault, J.; Meintjes, P. J.; Menzler, U.; Meyer, M.; Moderski, R.; Mohamed, M.; Moulin, E.; Murach, T.; Naumann, C. L.; de Naurois, M.; Niemiec, J.; Nolan, S. J.; Oakes, L.; Odaka, H.; Ohm, S.; Wilhelmi, E. de Ona; Opitz, B.; Ostrowski, M.; Oya, I.; Panter, M.; Parsons, R. D.; Arribas, M. Paz; Pekeur, N. W.; Pelletier, G.; Perez, J.; Petrucci, P. -O.; Peyaud, B.; Pita, S.; Poon, H.; Puehlhofer, G.; Punch, M.; Quirrenbach, A.; Raab, S.; Raue, M.; Reichardt, I.; Reimer, A.; Reimer, O.; Renaud, M.; Reyes, R. de los; Rieger, F.; Rob, L.; Romoli, C.; Rosier-Lees, S.; Rowell, G.; Rudak, B.; Rulten, C. B.; Sahakian, V.; Sanchez, David M.; Santangelo, A.; Schlickeiser, R.; Schuessler, F.; Schulz, A.; Schwanke, U.; Schwarzburg, S.; Schwemmer, S.; Sol, H.; Spengler, G.; Spies, F.; Stawarz, L.; Steenkamp, R.; Stegmann, Christian; Stinzing, F.; Stycz, K.; Sushch, Iurii; Tavernet, J. -P.; Tavernier, T.; Taylor, A. M.; Terrier, R.; Tluczykont, M.; Trichard, C.; Valerius, K.; van Eldik, C.; van Soelen, B.; Vasileiadis, G.; Venter, C.; Viana, A.; Vincent, P.; Voelk, H. J.; Volpe, F.; Vorster, M.; Vuillaume, T.; Wagner, S. J.; Wagner, P.; Wagner, R. M.; Ward, M.; Weidinger, M.; Weitzel, Q.; White, R.; Wierzcholska, A.; Willmann, P.; Woernlein, A.; Wouters, D.; Yang, R.; Zabalza, V.; Zacharias, M.; Zdziarski, A. A.; Zech, Alraune; Zechlin, H. -S.; Acero, F.; Casandjian, J. M.; Cohen-Tanugi, J.; Giordano, F.; Guillemot, L.; Lande, J.; Pletsch, H.; Uchiyama, Y. Probing the gamma-ray emission from HESS J1834-087 using HESS and Fermi LAT observations Aims. Previous observations with the High Energy Stereoscopic System (H.E.S.S.) have revealed an extended very-high-energy (VHE; E > 100 GeV) gamma-ray source, HESS J1834-087, coincident with the supernova remnant (SNR) W41. The origin of the gamma-ray emission was investigated in more detail with the H.E.S.S. array and the Large Area Telescope (LAT) onboard the Fermi Gamma-ray Space Telescope. Methods. The gamma-ray data provided by 61 h of observations with H.E.S.S., and four years with the Fermi LAT were analyzed, covering over five decades in energy from 1.8 GeV up to 30 TeV. The morphology and spectrum of the TeV and GeV sources were studied and multiwavelength data were used to investigate the origin of the gamma-ray emission toward W41. Results. The TeV source can be modeled with a sum of two components: one point-like and one significantly extended (sigma(TeV) = 0.17 degrees +/- 0.01 degrees), both centered on SNR W41 and exhibiting spectra described by a power law with index Gamma(TeV) similar or equal to 2.6. The GeV source detected with Fermi LAT is extended (sigma(GeV) = 0.15 degrees +/- 0.03 degrees) and morphologically matches the VHE emission. Its spectrum can be described by a power-law model with an index Gamma(GeV) = 2.15 +/- 0.12 and smoothly joins the spectrum of the whole TeV source. A break appears in the gamma-ray spectra around 100 GeV. No pulsations were found in the GeV range. Conclusions. Two main scenarios are proposed to explain the observed emission: a pulsar wind nebula (PWN) or the interaction of SNR W41 with an associated molecular cloud. X-ray observations suggest the presence of a point-like source (a pulsar candidate) near the center of the remnant and nonthermal X-ray diffuse emission that could arise from the possibly associated PWN. The PWN scenario is supported by the compatible positions of the TeV and GeV sources with the putative pulsar. However, the spectral energy distribution from radio to gamma-rays is reproduced by a one-zone leptonic model only if an excess of low-energy electrons is injected following a Maxwellian distribution by a pulsar with a high spin-down power (> 10(37) erg s(-1)). This additional low-energy component is not needed if we consider that the point-like TeV source is unrelated to the extended GeV and TeV sources. The interacting SNR scenario is supported by the spatial coincidence between the gamma-ray sources, the detection of OH (1720 MHz) maser lines, and the hadronic modeling. Les Ulis EDP Sciences 2015 10 Astronomy and astrophysics : an international weekly journal 574 10.1051/0004-6361/201322694 Institut für Physik und Astronomie OPUS4-39196 Wissenschaftlicher Artikel Abramowski, Attila; Aharonian, Felix A.; Benkhali, Faical Ait; Akhperjanian, A. G.; Angüner, Ekrem Oǧuzhan; Backes, Michael; Balenderan, Shangkari; Balzer, Arnim; Barnacka, Anna; Becherini, Yvonne; Tjus, J. Becker; Berge, David; Bernhard, Sabrina; Bernlöhr, K.; Birsin, E.; Biteau, Jonathan; Boettcher, Markus; Boisson, Catherine; Bolmont, J.; Bordas, Pol; Bregeon, Johan; Brun, Francois; Brun, Pierre; Bryan, Mark; Bulik, Tomasz; Carrigan, Svenja; Casanova, Sabrina; Chadwick, Paula M.; Chatraborty, N.; Chalme-Calvet, R.; Chaves, Ryan C. G.; Chretien, M.; Colafrancesco, Sergio; Cologna, Gabriele; Conrad, Jan; Couturier, C.; Cui, Y.; Davids, I. D.; Degrange, B.; Deil, C.; deWilt, P.; Djannati-Ataï, A.; Domainko, W.; Donath, A.; Dubus, G.; Dutson, K.; Dyks, J.; Dyrda, M.; Edwards, T.; Egberts, Kathrin; Eger, P.; Espigat, P.; Farnier, C.; Fegan, S.; Feinstein, F.; Fernandes, M. V.; Fernandez, D.; Fiasson, A.; Fontaine, G.; Foerster, A.; Fuessling, M.; Gabici, S.; Gajdus, M.; Gallant, Y. A.; Garrigoux, T.; Giavitto, G.; Giebels, B.; Glicenstein, J. F.; Gottschall, D.; Grondin, M. -H.; Grudzinska, M.; Hadasch, D.; Haeffner, S.; Hahn, J.; Harris, J.; Heinzelmann, G.; Henri, G.; Hermann, G.; Hervet, O.; Hillert, A.; Hinton, James Anthony; Hofmann, W.; Hofverberg, P.; Holler, Markus; Horns, D.; Ivascenko, A.; Jacholkowska, A.; Jahn, C.; Jamrozy, M.; Janiak, M.; Jankowsky, F.; Jung-Richardt, O.; Kastendieck, M. A.; Katarzynski, K.; Katz, U.; Kaufmann, S.; Khelifi, B.; Kieffer, M.; Klepser, S.; Klochkov, D.; Kluzniak, W.; Kolitzus, D.; Komin, Nu; Kosack, K.; Krakau, S.; Krayzel, F.; Krueger, P. P.; Laffon, H.; Lamanna, G.; Lefaucheur, J.; Lefranc, V.; Lemiere, A.; Lemoine-Goumard, M.; Lenain, J. P.; Lohse, T.; Lopatin, A.; Lu, C-C; Marandon, V.; Marcowith, A.; Marx, R.; Maurin, G.; Maxted, N.; Mayer, Markus; McComb, T. J. L.; Mehault, J.; Meintjes, P. J.; Menzler, U.; Meyer, M.; Mitchell, A. M. W.; Moderski, R.; Mohamed, M.; Mora, K.; Moulin, E.; Murach, T.; de Naurois, M.; Niemiec, J.; Nolan, S. J.; Oakes, L.; Odaka, H.; Ohm, S.; Opitz, B.; Ostrowski, M.; Oya, I.; Panter, M.; Parsons, R. D.; Anibas, M. Paz; Pekeur, N. W.; Pelletier, G.; Petrucci, P-O; Peyaud, B.; Pita, S.; Poon, H.; Puehlhofer, G.; Punch, M.; Quirrenbach, A.; Raab, S.; Reichardt, I.; Reimer, A.; Reimer, O.; Renaud, M.; de los Reyes, R.; Rieger, F.; Romoli, C.; Rosier-Lees, S.; Rowell, G.; Rudak, B.; Rulten, C. B.; Sahakian, V.; Salek, D.; Sanchez, David M.; Santangelo, A.; Schlickeiser, R.; Schuessler, F.; Schulz, A.; Schwanke, U.; Schwarzburg, S.; Schwemmer, S.; Sol, H.; Spanier, F.; Spengler, G.; Spies, F.; Stawarz, L.; Steenkamp, R.; Stegmann, Christian; Stinzing, F.; Stycz, K.; Sushch, Iurii; Tavernet, J-P; Tavernier, T.; Taylor, A. M.; Terrier, R.; Tluczykont, M.; Trichard, C.; Valerius, K.; van Eldik, C.; van Soelen, B.; Vasileiadis, G.; Veh, J.; Venter, C.; Viana, A.; Vincent, P.; Vink, J.; Voelk, H. J.; Volpe, F.; Vorster, M.; Vuillaume, T.; Wagner, S. J.; Wagner, P.; Wagner, R. M.; Ward, M.; Weidinger, M.; Weitzel, Q.; White, R.; Wierzcholska, A.; Willmann, P.; Woernlein, A.; Wouters, D.; Yang, R.; Zabalza, V.; Zaborov, D.; Zacharias, M.; Zdziarski, A. A.; Zech, Alraune; Zechlin, H-S 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) Les Ulis EDP Sciences 2015 7 Astronomy and astrophysics : an international weekly journal 574 10.1051/0004-6361/201425070 Institut für Physik und Astronomie OPUS4-38708 misc Abramowski, Attila; Aharonian, Felix A.; Benkhali, Faical Ait; Akhperjanian, A. G.; Angüner, Ekrem Oǧuzhan; Backes, Michael; Balenderan, Shangkari; Balzer, Arnim; Barnacka, Anna; Becherini, Yvonne; Tjus, Julia Becker; Berge, David; Bernhard, Sabrina; Bernlöhr, Konrad; Birsin, E.; Biteau, Jonathan; Böttcher, Markus; Boisson, Catherine; Bolmont, J.; Bordas, Pol; Bregeon, Johan; Brun, Francois; Brun, Pierre; Bryan, Mark; Bulik, Tomasz; Carrigan, Svenja; Casanova, Sabrina; Chadwick, Paula M.; Chakraborty, Nachiketa; Chalme-Calvet, R.; Chaves, Ryan C. G.; Chretien, M.; Colafrancesco, Sergio; Cologna, Gabriele; Conrad, Jan; Couturier, Claire; Cui, Yudong; Davids, Isak Delberth; Degrange, Bernhard; Deil, Christoph; deWilt, P.; Djannati-Ataï, A.; Domainko, Wilfried; Donath, Axel; Dubus, G.; Dutson, K.; Dyks, J.; Dyrda, M.; Edwards, Tanya; Egberts, Kathrin; Eger, Peter; Espigat, P.; Farnier, C.; Fegan, Stephen; Feinstein, Fabrice; Fernandes, Milton Virgilio; Fernandez, Diane; Fiasson, A.; Fontaine, Gerard; Förster, Andreas; Fuessling, M.; Gabici, S.; Gajdus, M.; Gallant, Yves A.; Garrigoux, Tania; Giavitto, G.; Giebels, Berrie; Glicenstein, Jean-Francois; Gottschall, Daniel; Grondin, M. -H.; Grudzinska, M.; Hadasch, Daniela; Haeffner, S.; Hahn, Joachim; Harris, Jonathan; Heinzelmann, Götz; Henri, G.; Hermann, German; Hervet, O.; Hillert, Andreas; Hinton, James Anthony; Hofmann, Werner; Hofverberg, Petter; Holler, Markus; Horns, Dieter; Ivascenko, Alex; Jacholkowska, A.; Jahn, C.; Jamrozy, Marek; Janiak, M.; Jankowsky, F.; Jung-Richardt, I.; Kastendieck, Max Anton; Katarzynski, K.; Katz, U.; Kaufmann, S.; Khelifi, B.; Kieffer, Michel; Klepser, S.; Klochkov, Dmitry; Kluzniak, W.; Kolitzus, David; Komin, Nu; Kosack, Karl; Krakau, Steffen; Krayzel, F.; Krueger, Pat P.; Laffon, H.; Lamanna, G.; Lefaucheur, J.; Lefranc, Valentin; Lemiere, A.; Lemoine-Goumard, M.; Lenain, J. -P.; Lohse, Thomas; Lopatin, A.; Lu, Chia-Chun; Marandon, Vincent; Marcowith, Alexandre; Marx, Ramin; Maurin, G.; Maxted, Nigel; Mayer, Michael; McComb, T. J. Lowry; Mehault, J.; Meintjes, P. J.; Menzler, Ulf; Meyer, M.; Mitchell, Alison M. W.; Moderski, R.; Mohamed, M.; Mora, K.; Moulin, Emmanuel; Murach, Thomas; de Naurois, Mathieu; Niemiec, J.; Nolan, Sam J.; Oakes, Louise; Odaka, Hirokazu; Ohm, S.; Optiz, Björn; Ostrowski, Michal; Oya, I.; Panter, Michael; Parsons, R. Daniel; Arribas, M. Paz; Pekeur, Nikki W.; Pelletier, G.; Petrucci, P. -O.; Peyaud, B.; Pita, S.; Poon, Helen; Pühlhofer, Gerd; Punch, M.; Quirrenbach, A.; Raab, S.; Reichardt, I.; Reimer, Anita; Reimer, Olaf; Renaud, Metz; de los Reyes, Raquel; Rieger, Frank; Romoli, C.; Rosier-Lees, S.; Rowell, G.; Rudak, B.; Rulten, C. B.; Sahakian, Vardan; Salek, D.; Sanchez, David M.; Santangelo, Andrea; Schlickeiser, Reinhard; Schuessler, F.; Schulz, A.; Schwanke, Ullrich; Schwarzburg, S.; Schwemmer, S.; Sol, H.; Spanier, Felix; Spengler, G.; Spies, Franziska; Stawarz, Lukasz; Steenkamp, Riaan; Stegmann, Christian; Stinzing, F.; Stycz, K.; Sushch, Iurii; Tavernet, J. -P.; Tavernier, T.; Taylor, A. M.; Terrier, R.; Tluczykont, Martin; Trichard, C.; Valerius, K.; van Eldik, C.; van Soelen, B.; Vasileiadis, Georges; Veh, J.; Venter, Christo; Viana, Aion; Vincent, P.; Vink, Jacco; Völk, Heinrich J.; Volpe, Francesca; Vorster, Martine; Vuillaume, T.; Wagner, S. J.; Wagner, P.; Wagner, R. M.; Ward, Martin; Weidinger, Matthias; Weitzel, Quirin; White, R.; Wierzcholska, A.; Willmann, P.; Woernlein, A.; Wouters, D.; Yang, Ruizhi; Zabalza, Victor; Zaborov, Dmitry; Zacharias, M.; Zdziarski, A. A.; Zech, Alraune; Zechlin, Hannes -S. 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) Les Ulis EDP Sciences 2015 2 Astronomy and astrophysics : an international weekly journal 580 10.1051/0004-6361/201425070e Institut für Physik und Astronomie