Please use this identifier to cite or link to this item:
Title: The supernova remnant W49B as seen with HESS and Fermi-LAT
Authors: Abdalla, H.
Abramowski, A.
Aharonian, F.
Benkhali, F. A.
Akhperjanian, A. G.
Andersson, T.
Anguener, O.
Arrieta, M.
Aubert, P.
Backes, M.
Balzer, A.
Barnard, M.
Becherini, Y.
Tjus, J. B.
Berge, D.
Bernhard, S.
Bernloehr, K.
Blackwell, R.
Boettcher, M.
Boisson, C.
Bolmont, J.
Bordas, P.
Bregeon, J.
Brun, F.
Brun, P.
Bryan, M.
Bulik, T.
Capasso, M.
Carr, J.
Casanova, S.
Cerruti, M.
Chakraborty, N.
Chalme-Calvet, R.
Chaves, R. C. G.
Chen, A.
Chevalier, J.
Chretien, M.
Colafrancesco, S.
Cologna, G.
Condon, B.
Conrad, J.
Cui, Y.
Davids, I. D.
Decock, J.
Degrange, B.
Deil, C.
Devin, J.
deWilt, P.
Dirson, L.
Djannati-Atai, A.
Domainko, W.
Donath, A.
Drury, L. O.
Dubus, G.
Dutson, K.
Dyks, J.
Edwards, T.
Egberts, K.
Eger, P.
Ernenwein, J.-P.
Eschbach, S.
Farnier, C.
Fegan, S.
Fernandes, M. V.
Fiasson, A.
Fontaine, G.
Foerster, A.
Funk, S.
Fuessling, M.
Gabici, S.
Gajdus, M.
Gallant, Y. A.
Garrigoux, T.
Giavitto, G.
Giebels, B.
Glicenstein, J. F.
Gottschall, D.
Goyal, A.
Grondin, M.-H.
Hadasch, D.
Hahn, J.
Haupt, M.
Hawkes, J.
Heinzelmann, G.
Henri, G.
Hermann, G.
Hervet, O.
Hinton, J. A.
Hofmann, W.
Hoischen, C.
Holler, M.
Horns, D.
Ivascenko, A.
Jacholkowska, A.
Jamrozy, M.
Janiak, M.
Jankowsky, D.
Jankowsky, F.
Jingo, M.
Jogler, T.
Jouvin, L.
Jung-Richardt, I.
Kastendieck, M. A.
Katarzynski, K.
Katz, U.
Kerszberg, D.
Khelifi, B.
Kieffer, M.
King, J.
Klepser, S.
Klochkov, D.
Kluzniak, W.
Kolitzus, D.
Komin, N.
Kosack, K.
Krakau, S.
Kraus, M.
Krayzel, F.
Krueger, P. P.
Laffon, H.
Lamanna, G.
Lau, J.
Lees, J.-P.
Lefaucheur, J.
Lefranc, V.
Lemiere, A.
Lemoine-Goumard, M.
Lenain, J.-P.
Leser, E.
Lohse, T.
Lorentz, M.
Liu, R.
Lopez-Coto, R.
Lypova, I.
Marandon, V.
Marcowith, A.
Mariaud, C.
Marx, R.
Maurin, G.
Maxted, N.
Mayer, M.
Meintjes, P. J.
Meyer, M.
Mitchell, A. M. W.
Moderski, R.
Mohamed, M.
Mohrmann, L.
Mora, K.
Moulin, E.
Murach, T.
de Naurois, M.
Niederwanger, F.
Niemiec, J.
Oakes, L.
O'Brien, Paul
Odaka, H.
Oettl, S.
Ohm, S.
Ostrowski, M.
Oya, I.
Padovani, M.
Panter, M.
Parsons, R. D.
Pekeur, N. W.
Pelletier, G.
Perennes, C.
Petrucci, P.-O.
Peyaud, B.
Piel, Q.
Pita, S.
Poon, H.
Prokhorov, D.
Prokoph, H.
Puehlhofer, G.
Punch, M.
Quirrenbach, A.
Raab, S.
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, D. A.
Santangelo, A.
Sasaki, M.
Schlickeiser, R.
Schuessler, F.
Schulz, A.
Schwanke, U.
Schwemmer, S.
Settimo, M.
Seyffert, A. S.
Shafi, N.
Shilon, I.
Simoni, R.
Sol, H.
Spanier, F.
Spengler, G.
Spies, F.
Stawarz, L.
Steenkamp, R.
Stegmann, C.
Stinzing, F.
Stycz, K.
Sushch, I.
Tavernet, J.-P.
Tavernier, T.
Taylor, A. M.
Terrier, R.
Tibaldo, L.
Tiziani, D.
Tluczykont, M.
Trichard, C.
Tuffs, R.
Uchiyama, Y.
van der Walt, D. J.
van Eldik, C.
van Rensburg, C.
van Soelen, B.
Vasileiadis, G.
Veh, J.
Venter, C.
Viana, A.
Vincent, P.
Vink, J.
Voisin, F.
Voelk, H. J.
Vuillaume, T.
Wadiasingh, Z.
Wagner, S. J.
Wagner, P.
Wagner, R. M.
White, R.
Wierzcholska, A.
Willmann, P.
Woernlein, A.
Wouters, D.
Yang, R.
Zabalza, V.
Zaborov, D.
Zacharias, M.
Zdziarski, A. A.
Zech, A.
Zefi, F.
Ziegler, A.
Zywucka, N.
Katsuta, J.
First Published: 9-Apr-2018
Publisher: EDP Sciences for European Southern Observatory
Citation: Astronomy and Astrophysics, 2018, 612, A5
Abstract: The supernova remnant (SNR) W49B originated from a core-collapse supernova that occurred between one and four thousand years ago, and subsequently evolved into a mixed-morphology remnant, which is interacting with molecular clouds (MC). Gamma-ray observations of SNR-MC associations are a powerful tool to constrain the origin of Galactic cosmic rays, as they can probe the acceleration of hadrons through their interaction with the surrounding medium and subsequent emission of non-thermal photons. We report the detection of a γ-ray source coincident with W49B at very high energies (VHE; E > 100 GeV) with the H.E.S.S. Cherenkov telescopes together with a study of the source with five years of Fermi-LAT high-energy γ-ray (0.06–300 GeV) data. The smoothly connected, combined source spectrum, measured from 60 MeV to multi-TeV energies, shows two significant spectral breaks at 304 ± 20 MeV and 8.4−2.5+2.2 GeV; the latter is constrained by the joint fit from the two instruments. The detected spectral features are similar to those observed in several other SNR-MC associations and are found to be indicative of γ-ray emission produced through neutral-pion decay.
DOI Link: 10.1051/0004-6361/201527843
ISSN: 0004-6361
eISSN: 1432-0746
Version: Publisher Version
Status: Peer-reviewed
Type: Journal Article
Rights: Copyright © 2018, EDP Sciences for European Southern Observatory. Deposited with reference to the publisher’s open access archiving policy. (
Appears in Collections:Published Articles, Dept. of Physics and Astronomy

Files in This Item:
File Description SizeFormat 
aa27843-15.pdfPublished (publisher PDF)1.25 MBAdobe PDFView/Open

Items in LRA are protected by copyright, with all rights reserved, unless otherwise indicated.