Gamma-Ray emission from the shell of supernova remnant W44 revealed by the Fermi LAT

A. Abdo, A.; Aa, Abdo; Ackermann, Markus; Ajello, Marco; Baldini, Luca; Mg, Baring; Ballet, J.; G. Baring, M.; Barbiellini, Guido; Bm, Baughman; Baring, M. G.; Bastieri, D.; M. Baughman, B.; D. Blandford, R.; Baughman, B. M.; Bechtol, K.; Bellazzini, R.; Rd, Blandford; Berenji, B.; D. Bloom, E.; Blandford, R. D.; Bloom, E. D.; Ed, Bloom; W. Borgland, A.; Bonamente, E.; Borgland, A. W.; Aw, Borgland; Bregeon, J.; Brez, A.; H. Burnett, T.; Brigida, M.; Th, Burnett; Bruel, P.; Burnett, T. H.; Ga, Caliandro; Buson, S.; Ra, Cameron; Caliandro, G. A.; M. Casandjian, J.; Cameron, R. A.; Caraveo, P. A.; Pa, Caraveo; Casandjian, J. M.; A. Caliandro, G.; Cecchi, C.; Çelik, Ö.; Jm, Casandjian; A. Cameron, R.; Celik, O.; Chekhtman, A.; C. Cheung, C.; Cheung, C. C.; Cc, Cheung; Chiang, J.; A. Caraveo, P.; Ciprini, S.; Claus, R.; Cognard, Ismaël; R. Cominsky, L.; Lr, Cominsky; Cohen-Tanugi, J.; Cominsky, L. R.; Conrad, J.; Cutini, S.; D. Dermer, C.; Cd, Dermer; de Angelis, A.; De Palma, F.; Angelis, A. D.; W. Digel, S.; Dermer, C. D.; Palma, F. D.; Digel, S. W.; do Couto e. Silva, E.; S. Drell, P.; Drell, P. S.; Sw, Digel; Dubois, R.; Silva, E. D. E.; Dumora, D.; Espinoza, C.; Farmer, C.; Ede, Silva; Farnier, C.; Favuzzi, C.; Ps, Drell; Fegan, S. J.; J. Fegan, S.; Focke, W. B.; Sj, Fegan; Fortin, P.; Frailis, M.; Wb, Focke; Fukazawa, Y.; B. Focke, W.; Funk, S.; Fusco, P.; Gargano, F.; Gasparrini, D.; Gehrels, N.; Ia, Grenier; Germani, S.; Mh, Grondin; Giavitto, G.; Giebels, B.; Je, Grove; Giglietto, N.; E. Grove, J.; Giordano, F.; Glanzman, T.; A. Grenier, I.; Godfrey, G.; Ak, Harding; Grenier, I. A.; Grondin, M.-H.; K. Harding, A.; Grove, J. E.; E. Hughes, R.; Guillemot, L.; Re, Hughes; Guiriec, S.; Hanabata, Y.; S. Jackson, M.; Harding, A. K.; Ms, Jackson; Hayashida, M.; Hays, E.; S. Johnson, A.; Hughes, R. E.; Johannesson, G.; Jackson, M. S.; Jóhannesson, G.; J. Johnson, T.; Johnson, A. S.; As, Johnson; Tj, Johnson; N. Johnson, W.; Johnson, T. J.; Wn, Johnson; Johnson, W. N.; Kamae, T.; Katagiri, H.; Kataoka, J.; Katsuta, J.; Ml, Kocian; Kawai, N.; L. Kocian, M.; Kerr, M.; Knödlseder, J.; Mn, Lovellette; Kocian, M. L.; Ag, Lyne; Kramer, M.; N. Lovellette, M.; Kuss, M.; Lande, J.; Gm, Madejski; Latronico, L.; G. Lyne, A.; Lemoine-Goumard, M.; Longo, F.; Mn, Mazziotta; Loparco, F.; M. Madejski, G.; Lott, B.; Lovellette, M. N.; N. Mazziotta, M.; Lubrano, P.; Je, McEnery; Lyne, A. G.; Pf, Michelson; E. Mcenery, J.; Makeev, A.; F. Michelson, P.; Mazziotta, M. N.; Me, Monzani; McEnery, J. E.; Meurer, C.; E. Monzani, M.; Michelson, P. F.; Iv, Moskalenko; Mitthumsiri, W.; Mizuno, T.; V. Moskalenko, I.; Monte, C.; Pl, Nolan; Monzani, M. E.; L. Nolan, P.; Morselli, A.; Moskalenko, I. V.; Jp, Norris; Murgia, S.; P. Norris, J.; Nakamori, T.; Nolan, P. L.; Jf, Ormes; Norris, J. P.; Noms, J. P.; F. Ormes, J.; Noutsos, A.; Nuss, E.; Ta, Porter; Ohsugi, T.; Ls, Rochester; Omodei, N.; Orlando, E.; Ay, Rodriguez; Ormes, J. F.; Rw, Romani; Paneque, D.; S. Rochester, L.; Parent, D.; Pelassa, V.; Pepe, M.; Y. Rodriguez, A.; Pesce-Rollins, M.; Hfw, Sadrozinski; Piron, F.; Porter, T. A.; W. Romani, R.; Rainò, S.; Pms, Parkinson; Rando, R.; F.-W. Sadrozinski, H.; Razzano, M.; Reimer, A.; Jd, Scargle; Reimer, O.; Saz Parkinson, P. M.; Reposeur, T.; Rochester, L. S.; M. Saz Parkinson, P.; Rodriguez, A. Y.; Ej, Siskind; Romani, R. W.; D. Scargle, J.; Roth, M.; Ryde, F.; Da, Smith; Sadrozinski, H. F.-W.; J. Siskind, E.; Sanchez, D.; Sander, A.; Smith, P. D.; Parkinson, P. M. Saz; Pd, Smith; Scargle, J. D.; Smith, David Stanley; Sgrò, C.; Siskind, E. J.; D. Smith, P.; Smith, D. A.; Bw, Stappers; W. Stappers, B.; Spandre, G.; Fw, Stecker; Spinelli, P.; W. Stecker, F.; Stappers, B. W.; Ms, Strickman; Stecker, F. W.; S. Strickman, M.; Strikman,; A. Smith, D.; Strickman, M. S.; J. Suson, D.; Suson, D. J.; Dj, Suson; Tajima, H.; Takahashi, H.; H. Takahashi, ‡.; Takahashi, T.; Tanaka, T.; Jb, Thayer; Thayer, J. B.; G. Thayer, J.; Thayer, J. G.; Jg, Thayer; Theureau, G.; J. Thompson, D.; Thompson, D. J.; Tibaldo, L.; Dj, Thompson; Tibolla, O.; Df, Torres; Torres, D. F.; F. Torres, D.; Tosti, G.; Tramacere, A.; Uchiyama, Y.; Usher, T. L.; Tl, Usher; Vasileiou, V.; Venter, C.; Vilchez, N.; Abdo, A. A.; Vitale, V.; P. Waite, A.; Ap, Waite; Waite, A. P.; Wang, P.; L. Winer, B.; Bl, Winer; S. Wood, K.; Winer, B. L.; Wood, K. S.; Ks, Wood; Yamazaki, R.; Ylinen, T.; Ziegler, M.

Published in

American Association for the Advancement of Science, Science, 5969(327), p. 1103-1106, 2010

DOI: 10.1126/science.1182787

Tools

Export citation

Search in Google Scholar

Gamma-Ray emission from the shell of supernova remnant W44 revealed by the Fermi LAT

Journal article published in 2010 by A. A. Abdo, Abdo Aa, Markus Ackermann

, Marco Ajello, Luca Baldini

, Baring Mg, J. Ballet, M. G. Baring, Guido Barbiellini, Baughman Bm, M. G. Baring, D. Bastieri

, B. M. Baughman, R. D. Blandford, B. M. Baughman and other authors.

This paper is available in a repository.

Full text: Download

Preprint: archiving allowed

Upload

Postprint: archiving allowed

Upload

Published version: archiving forbidden

Policy details

Data provided by

Abstract

Recent observations of supernova remnants (SNRs) hint that they accelerate cosmic rays to energies close to similar to 10(15) electron volts. However, the nature of the particles that produce the emission remains ambiguous. We report observations of SNR W44 with the Fermi Large Area Telescope at energies between 2 x 10(8) electron volts and 3 x 10(11) electron volts. The detection of a source with a morphology corresponding to the SNR shell implies that the emission is produced by particles accelerated there. The gamma-ray spectrum is well modeled with emission from protons and nuclei. Its steepening above similar to 10(9) electron volts provides a probe with which to study how particle acceleration responds to environmental effects such as shock propagation in dense clouds and how accelerated particles are released into interstellar space.

Published in

Links

Tools

Gamma-Ray emission from the shell of supernova remnant W44 revealed by the Fermi LAT

Abstract