The supernova remnant W49B as seen with H.E.S.S. and Fermi-LAT

H. Abdalla; A. Abramowski; F. Aharonian; F. Ait Benkhali; A. G. Akhperjanian; T. Andersson; E. O. Angüner; M. Arrieta; P. Aubert; M. Backes; A. Balzer; M. Barnard; Y. Becherini; J. Becker Tjus; D. Berge; S. Bernhard; K. Bernlöhr; R. Blackwell; M. Böttcher; C. Boisson; J. Bolmont; P. Bordas; J. Bregeon; F. Brun; P. Brun; M. Bryan; T. Bulik; M. Capasso; J. Carr; S. Casanova; M. Cerruti; N. Chakraborty; R. Chalme-Calvet; R. C.G. Chaves; A. Chen; J. Chevalier; M. Chrétien; S. Colafrancesco; G. Cologna; B. Condon; J. Conrad; Y. Cui; I. D. Davids; J. Decock; B. Degrange; C. Deil; J. Devin; P. Dewilt; L. Dirson; A. Djannati-Ataï; W. Domainko; A. Donath; L. O. Drury; G. Dubus; K. Dutson; J. Dyks; T. Edwards; K. Egberts; P. Eger; J. P. Ernenwein; S. Eschbach; C. Farnier; S. Fegan; M. V. Fernandes; A. Fiasson; G. Fontaine; A. Förster; S. Funk; M. Füling; S. Gabici; M. Gajdus; Y. A. Gallant; T. Garrigoux; G. Giavitto; B. Giebels; J. F. Glicenstein; D. Gottschall; A. Goyal; M. H. Grondin; D. Hadasch; J. Hahn; M. Haupt; J. Hawkes; G. Heinzelmann; G. Henri; G. Hermann; O. Hervet; J. A. Hinton; W. Hofmann; C. Hoischen; M. Holler; D. Horns; A. Ivascenko; A. Jacholkowska; M. Jamrozy; M. Janiak; D. Jankowsky; F. Jankowsky; M. Jingo; T. Jogler; L. Jouvin; I. Jung-Richardt; M. A. Kastendieck; K. Katarzyński; U. Katz; D. Kerszberg; B. Khélifi; M. Kieffer; J. King; S. Klepser; D. Klochkov; W. Kluźniak; D. Kolitzus; Nu Komin; K. Kosack; S. Krakau; M. Kraus; F. Krayzel; P. P. Krüger; H. Laffon; G. Lamanna; J. Lau; J. P. Lees; J. Lefaucheur; V. Lefranc; A. Lemière; M. Lemoine-Goumard; J. P. Lenain; E. Leser; T. Lohse; M. Lorentz; R. Liu; R. López-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. Mitchell; R. Moderski; M. Mohamed; L. Mohrmann; K. Morå; E. Moulin; T. Murach; M. De Naurois; F. Niederwanger; J. Niemiec; L. Oakes; P. O'Brien; H. Odaka; S. Öttl; 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; H. Poon; D. Prokhorov; H. Prokoph; G. Pühlhofer; M. Punch; A. Quirrenbach; S. Raab; 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. Schüssler; A. Schulz; U. Schwanke; S. Schwemmer; M. Settimo; A. S. Seyffert; N. Shafi; I. Shilon; R. Simoni; H. Sol; F. Spanier; G. Spengler; F. Spies; Stawarz; R. Steenkamp; C. Stegmann; F. Stinzing; K. Stycz; I. Sushch; J. P. Tavernet; T. Tavernier; A. M. Taylor; R. Terrier; L. Tibaldo; D. Tiziani; M. Tluczykont; C. Trichard; 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. Völk; T. Vuillaume; Z. Wadiasingh; S. J. Wagner; P. Wagner; R. M. Wagner; R. White; A. Wierzcholska; P. Willmann; A. Wörnlein; D. Wouters; R. Yang; V. Zabalza; D. Zaborov; M. Zacharias; A. A. Zdziarski; A. Zech; F. Zefi; A. Ziegler; N. Żywucka; J. Katsuta

doi:10.1051/0004-6361/201527843

The supernova remnant W49B as seen with H.E.S.S. and Fermi-LAT

H. Abdalla, A. Abramowski, F. Aharonian, F. Ait Benkhali, A. G. Akhperjanian, T. Andersson, E. O. Angüner, M. Arrieta, P. Aubert, M. Backes, A. Balzer, M. Barnard, Y. Becherini, J. Becker Tjus, D. Berge, S. Bernhard, K. Bernlöhr, R. Blackwell, M. Böttcher, C. BoissonJ. Bolmont, P. Bordas, J. Bregeon, F. Brun, P. Brun, M. Bryan, T. Bulik, M. Capasso, J. Carr, S. Casanova, M. Cerruti, N. Chakraborty, R. Chalme-Calvet, R. C.G. Chaves, A. Chen, J. Chevalier, M. Chrétien, S. Colafrancesco, G. Cologna, B. Condon, J. Conrad, Y. Cui, I. D. Davids, J. Decock, B. Degrange, C. Deil, J. Devin, P. Dewilt, L. Dirson, A. Djannati-Ataï, W. Domainko, A. Donath, L. O. Drury, G. Dubus, K. Dutson, J. Dyks, T. Edwards, K. Egberts, P. Eger, J. P. Ernenwein, S. Eschbach, C. Farnier, S. Fegan, M. V. Fernandes, A. Fiasson, G. Fontaine, A. Förster, S. Funk, M. Füling, S. Gabici, M. Gajdus, Y. A. Gallant, T. Garrigoux, G. Giavitto, B. Giebels, J. F. Glicenstein, D. Gottschall, A. Goyal, M. H. Grondin, D. Hadasch, J. Hahn, M. Haupt, J. Hawkes, G. Heinzelmann, G. Henri, G. Hermann, O. Hervet, J. A. Hinton, W. Hofmann, C. Hoischen, M. Holler, D. Horns, A. Ivascenko, A. Jacholkowska, M. Jamrozy, M. Janiak, D. Jankowsky, F. Jankowsky, M. Jingo, T. Jogler, L. Jouvin, I. Jung-Richardt, M. A. Kastendieck, K. Katarzyński, U. Katz, D. Kerszberg, B. Khélifi, M. Kieffer, J. King, S. Klepser, D. Klochkov, W. Kluźniak, D. Kolitzus, Nu Komin, K. Kosack, S. Krakau, M. Kraus, F. Krayzel, P. P. Krüger, H. Laffon, G. Lamanna, J. Lau, J. P. Lees, J. Lefaucheur, V. Lefranc, A. Lemière, M. Lemoine-Goumard, J. P. Lenain, E. Leser, T. Lohse, M. Lorentz, R. Liu, R. López-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. Mitchell, R. Moderski, M. Mohamed, L. Mohrmann, K. Morå, E. Moulin, T. Murach, M. De Naurois, F. Niederwanger, J. Niemiec, L. Oakes, P. O'Brien, H. Odaka, S. Öttl, 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, H. Poon, D. Prokhorov, H. Prokoph, G. Pühlhofer, M. Punch, A. Quirrenbach, S. Raab, 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. Schüssler, A. Schulz, U. Schwanke, S. Schwemmer, M. Settimo, A. S. Seyffert, N. Shafi, I. Shilon, R. Simoni, H. Sol, F. Spanier, G. Spengler, F. Spies, Stawarz, R. Steenkamp, C. Stegmann, F. Stinzing, K. Stycz, I. Sushch, J. P. Tavernet, T. Tavernier, A. M. Taylor, R. Terrier, L. Tibaldo, D. Tiziani, M. Tluczykont, C. Trichard, 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. Völk, T. Vuillaume, Z. Wadiasingh, S. J. Wagner, P. Wagner, R. M. Wagner, R. White, A. Wierzcholska, P. Willmann, A. Wörnlein, D. Wouters, R. Yang, V. Zabalza, D. Zaborov, M. Zacharias, A. A. Zdziarski, A. Zech, F. Zefi, A. Ziegler, N. Żywucka, J. Katsuta

Research output: Contribution to journal › Article › peer-review

30 Scopus citations

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.

Original language	English
Article number	A5
Journal	Astronomy and Astrophysics
Volume	612
DOIs	https://doi.org/10.1051/0004-6361/201527843
State	Published - 1 Apr 2018
Externally published	Yes

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

Access to Document

10.1051/0004-6361/201527843

Cite this

Abdalla, H., Abramowski, A., Aharonian, F., Benkhali, F. A., Akhperjanian, A. G., Andersson, T., Angüner, E. O., Arrieta, M., Aubert, P., Backes, M., Balzer, A., Barnard, M., Becherini, Y., Tjus, J. B., Berge, D., Bernhard, S., Bernlöhr, K., Blackwell, R., Böttcher, M., ... Katsuta, J. (2018). The supernova remnant W49B as seen with H.E.S.S. and Fermi-LAT. Astronomy and Astrophysics, 612, Article A5. https://doi.org/10.1051/0004-6361/201527843

@article{c567aa4f1bf546ef835d44c18f1bfb8d,

title = "The supernova remnant W49B as seen with H.E.S.S. and Fermi-LAT",

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.",

author = "H. Abdalla and A. Abramowski and F. Aharonian and Benkhali, {F. Ait} and Akhperjanian, {A. G.} and T. Andersson and Ang{\"u}ner, {E. O.} and M. Arrieta and P. Aubert and M. Backes and A. Balzer and M. Barnard and Y. Becherini and Tjus, {J. Becker} and D. Berge and S. Bernhard and K. Bernl{\"o}hr and R. Blackwell and M. B{\"o}ttcher and C. Boisson and J. Bolmont and P. Bordas and J. Bregeon and F. Brun and P. Brun and M. Bryan and T. Bulik and M. Capasso and J. Carr and S. Casanova and M. Cerruti and N. Chakraborty and R. Chalme-Calvet and Chaves, {R. C.G.} and A. Chen and J. Chevalier and M. Chr{\'e}tien and S. Colafrancesco and G. Cologna and B. Condon and J. Conrad and Y. Cui and Davids, {I. D.} and J. Decock and B. Degrange and C. Deil and J. Devin and P. Dewilt and L. Dirson and A. Djannati-Ata{\"i} and W. Domainko and A. Donath and Drury, {L. O.} and G. Dubus and K. Dutson and J. Dyks and T. Edwards and K. Egberts and P. Eger and Ernenwein, {J. P.} and S. Eschbach and C. Farnier and S. Fegan and Fernandes, {M. V.} and A. Fiasson and G. Fontaine and A. F{\"o}rster and S. Funk and M. F{\"u}ling and S. Gabici and M. Gajdus and Gallant, {Y. A.} and T. Garrigoux and G. Giavitto and B. Giebels and Glicenstein, {J. F.} and D. Gottschall and A. Goyal and Grondin, {M. H.} and D. Hadasch and J. Hahn and M. Haupt and J. Hawkes and G. Heinzelmann and G. Henri and G. Hermann and O. Hervet and Hinton, {J. A.} and W. Hofmann and C. Hoischen and M. Holler and D. Horns and A. Ivascenko and A. Jacholkowska and M. Jamrozy and M. Janiak and D. Jankowsky and F. Jankowsky and M. Jingo and T. Jogler and L. Jouvin and I. Jung-Richardt and Kastendieck, {M. A.} and K. Katarzy{\'n}ski and U. Katz and D. Kerszberg and B. Kh{\'e}lifi and M. Kieffer and J. King and S. Klepser and D. Klochkov and W. Klu{\'z}niak and D. Kolitzus and Nu Komin and K. Kosack and S. Krakau and M. Kraus and F. Krayzel and Kr{\"u}ger, {P. P.} and H. Laffon and G. Lamanna and J. Lau and Lees, {J. P.} and J. Lefaucheur and V. Lefranc and A. Lemi{\`e}re and M. Lemoine-Goumard and Lenain, {J. P.} and E. Leser and T. Lohse and M. Lorentz and R. Liu and R. L{\'o}pez-Coto and I. Lypova and V. Marandon and A. Marcowith and C. Mariaud and R. Marx and G. Maurin and N. Maxted and M. Mayer and Meintjes, {P. J.} and M. Meyer and Mitchell, {A. M.W.} and R. Moderski and M. Mohamed and L. Mohrmann and K. Mor{\aa} and E. Moulin and T. Murach and Naurois, {M. De} and F. Niederwanger and J. Niemiec and L. Oakes and P. O'Brien and H. Odaka and S. {\"O}ttl and S. Ohm and M. Ostrowski and I. Oya and M. Padovani and M. Panter and Parsons, {R. D.} and Pekeur, {N. W.} and G. Pelletier and C. Perennes and Petrucci, {P. O.} and B. Peyaud and Q. Piel and S. Pita and H. Poon and D. Prokhorov and H. Prokoph and G. P{\"u}hlhofer and M. Punch and A. Quirrenbach and S. Raab and A. Reimer and O. Reimer and M. Renaud and {Los Reyes}, {R. De} and F. Rieger and C. Romoli and S. Rosier-Lees and G. Rowell and B. Rudak and Rulten, {C. B.} and V. Sahakian and D. Salek and Sanchez, {D. A.} and A. Santangelo and M. Sasaki and R. Schlickeiser and F. Sch{\"u}ssler and A. Schulz and U. Schwanke and S. Schwemmer and M. Settimo and Seyffert, {A. S.} and N. Shafi and I. Shilon and R. Simoni and H. Sol and F. Spanier and G. Spengler and F. Spies and Stawarz and R. Steenkamp and C. Stegmann and F. Stinzing and K. Stycz and I. Sushch and Tavernet, {J. P.} and T. Tavernier and Taylor, {A. M.} and R. Terrier and L. Tibaldo and D. Tiziani and M. Tluczykont and C. Trichard and R. Tuffs and Y. Uchiyama and {Van Der Walt}, {D. J.} and Eldik, {C. Van} and Rensburg, {C. Van} and Soelen, {B. Van} and G. Vasileiadis and J. Veh and C. Venter and A. Viana and P. Vincent and J. Vink and F. Voisin and V{\"o}lk, {H. J.} and T. Vuillaume and Z. Wadiasingh and Wagner, {S. J.} and P. Wagner and Wagner, {R. M.} and R. White and A. Wierzcholska and P. Willmann and A. W{\"o}rnlein and D. Wouters and R. Yang and V. Zabalza and D. Zaborov and M. Zacharias and Zdziarski, {A. A.} and A. Zech and F. Zefi and A. Ziegler and N. {\.Z}ywucka and J. Katsuta",

note = "Publisher Copyright: {\textcopyright} ESO.",

year = "2018",

month = apr,

day = "1",

doi = "10.1051/0004-6361/201527843",

language = "English",

volume = "612",

journal = "Astronomy and Astrophysics",

issn = "0004-6361",

publisher = "EDP Sciences",

}

Abdalla, H, Abramowski, A, Aharonian, F, Benkhali, FA, Akhperjanian, AG, Andersson, T, Angüner, EO, Arrieta, M, Aubert, P, Backes, M, Balzer, A, Barnard, M, Becherini, Y, Tjus, JB, Berge, D, Bernhard, S, Bernlöhr, K, Blackwell, R, Böttcher, 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, RCG, Chen, A, Chevalier, J, Chrétien, M, Colafrancesco, S, Cologna, G, Condon, B, Conrad, J, Cui, Y, Davids, ID, Decock, J, Degrange, B, Deil, C, Devin, J, Dewilt, P, Dirson, L, Djannati-Ataï, A, Domainko, W, Donath, A, Drury, LO, Dubus, G, Dutson, K, Dyks, J, Edwards, T, Egberts, K, Eger, P, Ernenwein, JP, Eschbach, S, Farnier, C, Fegan, S, Fernandes, MV, Fiasson, A, Fontaine, G, Förster, A, Funk, S, Füling, M, Gabici, S, Gajdus, M, Gallant, YA, Garrigoux, T, Giavitto, G, Giebels, B, Glicenstein, JF, Gottschall, D, Goyal, A, Grondin, MH, Hadasch, D, Hahn, J, Haupt, M, Hawkes, J, Heinzelmann, G, Henri, G, Hermann, G, Hervet, O, Hinton, JA, 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, MA, Katarzyński, K, Katz, U, Kerszberg, D, Khélifi, B, Kieffer, M, King, J, Klepser, S, Klochkov, D, Kluźniak, W, Kolitzus, D, Komin, N, Kosack, K, Krakau, S, Kraus, M, Krayzel, F, Krüger, PP, Laffon, H, Lamanna, G, Lau, J, Lees, JP, Lefaucheur, J, Lefranc, V, Lemière, A, Lemoine-Goumard, M, Lenain, JP, Leser, E, Lohse, T, Lorentz, M, Liu, R, López-Coto, R, Lypova, I, Marandon, V, Marcowith, A, Mariaud, C, Marx, R, Maurin, G, Maxted, N, Mayer, M, Meintjes, PJ, Meyer, M, Mitchell, AMW, Moderski, R, Mohamed, M, Mohrmann, L, Morå, K, Moulin, E, Murach, T, Naurois, MD, Niederwanger, F, Niemiec, J, Oakes, L, O'Brien, P, Odaka, H, Öttl, S, Ohm, S, Ostrowski, M, Oya, I, Padovani, M, Panter, M, Parsons, RD, Pekeur, NW, Pelletier, G, Perennes, C, Petrucci, PO, Peyaud, B, Piel, Q, Pita, S, Poon, H, Prokhorov, D, Prokoph, H, Pühlhofer, G, Punch, M, Quirrenbach, A, Raab, S, Reimer, A, Reimer, O, Renaud, M, Los Reyes, RD, Rieger, F, Romoli, C, Rosier-Lees, S, Rowell, G, Rudak, B, Rulten, CB, Sahakian, V, Salek, D, Sanchez, DA, Santangelo, A, Sasaki, M, Schlickeiser, R, Schüssler, F, Schulz, A, Schwanke, U, Schwemmer, S, Settimo, M, Seyffert, AS, Shafi, N, Shilon, I, Simoni, R, Sol, H, Spanier, F, Spengler, G, Spies, F, Stawarz, Steenkamp, R, Stegmann, C, Stinzing, F, Stycz, K, Sushch, I, Tavernet, JP, Tavernier, T, Taylor, AM, Terrier, R, Tibaldo, L, Tiziani, D, Tluczykont, M, Trichard, C, Tuffs, R, Uchiyama, Y, Van Der Walt, DJ, Eldik, CV, Rensburg, CV, Soelen, BV, Vasileiadis, G, Veh, J, Venter, C, Viana, A, Vincent, P, Vink, J, Voisin, F, Völk, HJ, Vuillaume, T, Wadiasingh, Z, Wagner, SJ, Wagner, P, Wagner, RM, White, R, Wierzcholska, A, Willmann, P, Wörnlein, A, Wouters, D, Yang, R, Zabalza, V, Zaborov, D, Zacharias, M, Zdziarski, AA, Zech, A, Zefi, F, Ziegler, A, Żywucka, N & Katsuta, J 2018, 'The supernova remnant W49B as seen with H.E.S.S. and Fermi-LAT', Astronomy and Astrophysics, vol. 612, A5. https://doi.org/10.1051/0004-6361/201527843

TY - JOUR

T1 - The supernova remnant W49B as seen with H.E.S.S. and Fermi-LAT

AU - Abdalla, H.

AU - Abramowski, A.

AU - Aharonian, F.

AU - Benkhali, F. Ait

AU - Akhperjanian, A. G.

AU - Andersson, T.

AU - Angüner, E. O.

AU - Arrieta, M.

AU - Aubert, P.

AU - Backes, M.

AU - Balzer, A.

AU - Barnard, M.

AU - Becherini, Y.

AU - Tjus, J. Becker

AU - Berge, D.

AU - Bernhard, S.

AU - Bernlöhr, K.

AU - Blackwell, R.

AU - Böttcher, M.

AU - Boisson, C.

AU - Bolmont, J.

AU - Bordas, P.

AU - Bregeon, J.

AU - Brun, F.

AU - Brun, P.

AU - Bryan, M.

AU - Bulik, T.

AU - Capasso, M.

AU - Carr, J.

AU - Casanova, S.

AU - Cerruti, M.

AU - Chakraborty, N.

AU - Chalme-Calvet, R.

AU - Chaves, R. C.G.

AU - Chen, A.

AU - Chevalier, J.

AU - Chrétien, M.

AU - Colafrancesco, S.

AU - Cologna, G.

AU - Condon, B.

AU - Conrad, J.

AU - Cui, Y.

AU - Davids, I. D.

AU - Decock, J.

AU - Degrange, B.

AU - Deil, C.

AU - Devin, J.

AU - Dewilt, P.

AU - Dirson, L.

AU - Djannati-Ataï, A.

AU - Domainko, W.

AU - Donath, A.

AU - Drury, L. O.

AU - Dubus, G.

AU - Dutson, K.

AU - Dyks, J.

AU - Edwards, T.

AU - Egberts, K.

AU - Eger, P.

AU - Ernenwein, J. P.

AU - Eschbach, S.

AU - Farnier, C.

AU - Fegan, S.

AU - Fernandes, M. V.

AU - Fiasson, A.

AU - Fontaine, G.

AU - Förster, A.

AU - Funk, S.

AU - Füling, M.

AU - Gabici, S.

AU - Gajdus, M.

AU - Gallant, Y. A.

AU - Garrigoux, T.

AU - Giavitto, G.

AU - Giebels, B.

AU - Glicenstein, J. F.

AU - Gottschall, D.

AU - Goyal, A.

AU - Grondin, M. H.

AU - Hadasch, D.

AU - Hahn, J.

AU - Haupt, M.

AU - Hawkes, J.

AU - Heinzelmann, G.

AU - Henri, G.

AU - Hermann, G.

AU - Hervet, O.

AU - Hinton, J. A.

AU - Hofmann, W.

AU - Hoischen, C.

AU - Holler, M.

AU - Horns, D.

AU - Ivascenko, A.

AU - Jacholkowska, A.

AU - Jamrozy, M.

AU - Janiak, M.

AU - Jankowsky, D.

AU - Jankowsky, F.

AU - Jingo, M.

AU - Jogler, T.

AU - Jouvin, L.

AU - Jung-Richardt, I.

AU - Kastendieck, M. A.

AU - Katarzyński, K.

AU - Katz, U.

AU - Kerszberg, D.

AU - Khélifi, B.

AU - Kieffer, M.

AU - King, J.

AU - Klepser, S.

AU - Klochkov, D.

AU - Kluźniak, W.

AU - Kolitzus, D.

AU - Komin, Nu

AU - Kosack, K.

AU - Krakau, S.

AU - Kraus, M.

AU - Krayzel, F.

AU - Krüger, P. P.

AU - Laffon, H.

AU - Lamanna, G.

AU - Lau, J.

AU - Lees, J. P.

AU - Lefaucheur, J.

AU - Lefranc, V.

AU - Lemière, A.

AU - Lemoine-Goumard, M.

AU - Lenain, J. P.

AU - Leser, E.

AU - Lohse, T.

AU - Lorentz, M.

AU - Liu, R.

AU - López-Coto, R.

AU - Lypova, I.

AU - Marandon, V.

AU - Marcowith, A.

AU - Mariaud, C.

AU - Marx, R.

AU - Maurin, G.

AU - Maxted, N.

AU - Mayer, M.

AU - Meintjes, P. J.

AU - Meyer, M.

AU - Mitchell, A. M.W.

AU - Moderski, R.

AU - Mohamed, M.

AU - Mohrmann, L.

AU - Morå, K.

AU - Moulin, E.

AU - Murach, T.

AU - Naurois, M. De

AU - Niederwanger, F.

AU - Niemiec, J.

AU - Oakes, L.

AU - O'Brien, P.

AU - Odaka, H.

AU - Öttl, S.

AU - Ohm, S.

AU - Ostrowski, M.

AU - Oya, I.

AU - Padovani, M.

AU - Panter, M.

AU - Parsons, R. D.

AU - Pekeur, N. W.

AU - Pelletier, G.

AU - Perennes, C.

AU - Petrucci, P. O.

AU - Peyaud, B.

AU - Piel, Q.

AU - Pita, S.

AU - Poon, H.

AU - Prokhorov, D.

AU - Prokoph, H.

AU - Pühlhofer, G.

AU - Punch, M.

AU - Quirrenbach, A.

AU - Raab, S.

AU - Reimer, A.

AU - Reimer, O.

AU - Renaud, M.

AU - Los Reyes, R. De

AU - Rieger, F.

AU - Romoli, C.

AU - Rosier-Lees, S.

AU - Rowell, G.

AU - Rudak, B.

AU - Rulten, C. B.

AU - Sahakian, V.

AU - Salek, D.

AU - Sanchez, D. A.

AU - Santangelo, A.

AU - Sasaki, M.

AU - Schlickeiser, R.

AU - Schüssler, F.

AU - Schulz, A.

AU - Schwanke, U.

AU - Schwemmer, S.

AU - Settimo, M.

AU - Seyffert, A. S.

AU - Shafi, N.

AU - Shilon, I.

AU - Simoni, R.

AU - Sol, H.

AU - Spanier, F.

AU - Spengler, G.

AU - Spies, F.

AU - Stawarz,

AU - Steenkamp, R.

AU - Stegmann, C.

AU - Stinzing, F.

AU - Stycz, K.

AU - Sushch, I.

AU - Tavernet, J. P.

AU - Tavernier, T.

AU - Taylor, A. M.

AU - Terrier, R.

AU - Tibaldo, L.

AU - Tiziani, D.

AU - Tluczykont, M.

AU - Trichard, C.

AU - Tuffs, R.

AU - Uchiyama, Y.

AU - Van Der Walt, D. J.

AU - Eldik, C. Van

AU - Rensburg, C. Van

AU - Soelen, B. Van

AU - Vasileiadis, G.

AU - Veh, J.

AU - Venter, C.

AU - Viana, A.

AU - Vincent, P.

AU - Vink, J.

AU - Voisin, F.

AU - Völk, H. J.

AU - Vuillaume, T.

AU - Wadiasingh, Z.

AU - Wagner, S. J.

AU - Wagner, P.

AU - Wagner, R. M.

AU - White, R.

AU - Wierzcholska, A.

AU - Willmann, P.

AU - Wörnlein, A.

AU - Wouters, D.

AU - Yang, R.

AU - Zabalza, V.

AU - Zaborov, D.

AU - Zacharias, M.

AU - Zdziarski, A. A.

AU - Zech, A.

AU - Zefi, F.

AU - Ziegler, A.

AU - Żywucka, N.

AU - Katsuta, J.

PY - 2018/4/1

Y1 - 2018/4/1

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=85045418660&partnerID=8YFLogxK

U2 - 10.1051/0004-6361/201527843

DO - 10.1051/0004-6361/201527843

M3 - Article

AN - SCOPUS:85045418660

SN - 0004-6361

VL - 612

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

M1 - A5

ER -

The supernova remnant W49B as seen with H.E.S.S. and Fermi-LAT

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