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DETECTION OF A SPEC...
DETECTION OF A SPECTRAL BREAK IN THE EXTRA HARD COMPONENT OF GRB 090926A
- Article/chapterEnglish2011
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LIBRIS-ID:oai:DiVA.org:su-69463
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https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-69463URI
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https://doi.org/10.1088/0004-637X/729/2/114DOI
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https://lup.lub.lu.se/record/1926177URI
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https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-32671URI
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Language:English
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Summary in:English
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
Notes
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authorCount :191
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QC 20110418
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We report on the observation of the bright, long gamma-ray burst, GRB 090926A, by the Gamma-ray Burst Monitor and Large Area Telescope (LAT) instruments on board the Fermi Gamma-ray Space Telescope. GRB 090926A shares several features with other bright LAT bursts. In particular, it clearly shows a short spike in the light curve that is present in all detectors that see the burst, and this in turn suggests that there is a common region of emission across the entire Fermi energy range. In addition, while a separate high-energy power-law component has already been observed in other gamma-ray bursts, here we report for the first time the detection with good significance of a high-energy spectral break (or cutoff) in this power-law component around 1.4 GeV in the time-integrated spectrum. If the spectral break is caused by opacity to electron-positron pair production within the source, then this observation allows us to compute the bulk Lorentz factor for the outflow, rather than a lower limit.
Subject headings and genre
Added entries (persons, corporate bodies, meetings, titles ...)
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Ajello, M.
(author)
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Asano, K.
(author)
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Axelsson, MagnusLund University,Lunds universitet,Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC),Astronomi - Genomgår omorganisation,Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation,Naturvetenskapliga fakulteten,Lund Observatory - Undergoing reorganization,Department of Astronomy and Theoretical Physics - Undergoing reorganization,Faculty of Science(Swepub:lu)astr-msa
(author)
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Baldini, L.
(author)
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Ballet, J.
(author)
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Barbiellini, G.
(author)
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Baring, M. G.
(author)
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Bastieri, D.
(author)
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Bechtol, K.
(author)
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Bellazzini, R.
(author)
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Berenji, B.
(author)
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Bhat, P. N.
(author)
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Bissaldi, E.
(author)
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Blandford, R. D.
(author)
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Bonamente, E.
(author)
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Borgland, A. W.
(author)
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Bouvier, A.
(author)
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Bregeon, J.
(author)
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Brez, A.
(author)
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McGlynn, SineadKTH,Partikel- och astropartikelfysik(Swepub:kth)u18hd8ug
(author)
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Brigida, M.
(author)
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Bruel, P.
(author)
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Buehler, R.
(author)
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Buson, S.
(author)
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Caliandro, G. A.
(author)
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Cameron, R. A.
(author)
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Caraveo, P. A.
(author)
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Carrigan, S.
(author)
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Casandjian, J. M.
(author)
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Cecchi, C.
(author)
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Celik, O.
(author)
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Chaplin, V.
(author)
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Charles, E.
(author)
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Chekhtman, A.
(author)
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Chiang, J.
(author)
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Ciprini, S.
(author)
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Claus, R.
(author)
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Cohen-Tanugi, J.
(author)
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Connaughton, V.
(author)
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Conrad, JanStockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)conrad
(author)
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Cutini, S.
(author)
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Dermer, C. D.
(author)
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De Angelis, A.
(author)
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De Palma, F.
(author)
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Dingus, B. L.
(author)
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Silva, E. Do Couto E.
(author)
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Drell, P. S.
(author)
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Dubois, R.
(author)
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Favuzzi, C.
(author)
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Fegan, S. J.
(author)
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Ferrara, E. C.
(author)
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Focke, W. B.
(author)
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Frailis, M.
(author)
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Fukazawa, Y.
(author)
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Funk, S.
(author)
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Fusco, P.
(author)
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Gargano, F.
(author)
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Gasparrini, D.
(author)
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Gehrels, N.
(author)
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Germani, S.
(author)
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Giglietto, N.
(author)
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Giordano, F.
(author)
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Giroletti, M.
(author)
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Glanzman, T.
(author)
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Godfrey, G.
(author)
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Goldstein, A.
(author)
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Granot, J.
(author)
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Greiner, J.
(author)
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Grenier, I. A.
(author)
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Grove, J. E.
(author)
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Guiriec, S.
(author)
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Hadasch, D.
(author)
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Hanabata, Y.
(author)
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Harding, A. K.
(author)
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Hayashi, K.
(author)
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Hayashida, M.
(author)
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Hays, E.
(author)
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Horan, D.
(author)
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Hughes, R. E.
(author)
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Itoh, R.
(author)
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Johannesson, G.
(author)
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Johnson, A. S.
(author)
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Johnson, W. N.
(author)
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Kamae, T.
(author)
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Katagiri, H.
(author)
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Kataoka, J.
(author)
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Kippen, R. M.
(author)
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Knoedlseder, J.
(author)
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Kocevski, D.
(author)
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Kouveliotou, C.
(author)
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Kuss, M.
(author)
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Lande, J.
(author)
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Latronico, L.
(author)
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Lee, S. -H
(author)
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Garde, Maja LlenaStockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)mgarde
(author)
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Longo, F.
(author)
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Loparco, F.
(author)
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Lovellette, M. N.
(author)
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Lubrano, P.
(author)
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Makeev, A.
(author)
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Mazziotta, M. N.
(author)
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McBreen, S.
(author)
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McEnery, J. E.
(author)
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McGlynn, S.
(author)
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Meegan, C.
(author)
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Mehault, J.
(author)
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Meszaros, P.
(author)
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Michelson, P. F.
(author)
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Mizuno, T.
(author)
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Monte, C.
(author)
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Moretti, Elena,1982-KTH,Partikel- och astropartikelfysik(Swepub:kth)u1t69eg4
(author)
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Moretti, E.
(author)
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Morselli, A.
(author)
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Moskalenko, I. V.
(author)
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Murgia, S.
(author)
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Nakajima, H.
(author)
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Nakamori, T.
(author)
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Naumann-Godo, M.
(author)
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Nishino, S.
(author)
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Nolan, P. L.
(author)
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Norris, J. P.
(author)
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Nuss, E.
(author)
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Ohno, M.
(author)
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Ohsugi, T.
(author)
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Okumura, A.
(author)
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Omodei, N.
(author)
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Orlando, E.
(author)
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Ormes, J. F.
(author)
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Ozaki, M.
(author)
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Paciesas, W. S.
(author)
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Paneque, D.
(author)
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Panetta, J. H.
(author)
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Parent, D.
(author)
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Pelassa, V.
(author)
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Pepe, M.
(author)
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Pesce-Rollins, M.
(author)
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Petrosian, V.
(author)
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Piron, F.
(author)
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Porter, T. A.
(author)
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Preece, R.
(author)
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Racusin, J. L.
(author)
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Raino, S.
(author)
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Rando, R.
(author)
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Rau, A.
(author)
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Razzano, M.
(author)
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Razzaque, S.
(author)
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Reimer, A.
(author)
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Reimer, O.
(author)
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Reposeur, T.
(author)
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Reyes, L. C.
(author)
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Ripken, JoachimStockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)ripken
(author)
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Ritz, S.
(author)
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Roth, M.
(author)
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Ryde, FelixKTH,Partikel- och astropartikelfysik(Swepub:kth)u1tlyg6w
(author)
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Sadrozinski, H. F. -W
(author)
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Sander, A.
(author)
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Scargle, J. D.
(author)
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Strickman, M. S.
(author)
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Suson, D. J.
(author)
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Tajima, H.
(author)
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Takahashi, H.
(author)
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Tanaka, T.
(author)
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Tanaka, Y.
(author)
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Thayer, J. B.
(author)
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Thayer, J. G.
(author)
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Tibaldo, L.
(author)
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Tierney, D.
(author)
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Toma, K.
(author)
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Torres, D. F.
(author)
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Tosti, G.
(author)
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Tramacere, A.
(author)
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Uchiyama, Y.
(author)
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Uehara, T.
(author)
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Usher, T. L.
(author)
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Vandenbroucke, J.
(author)
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van der Horst, A. J.
(author)
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Vasileiou, V.
(author)
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Vilchez, N.
(author)
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Vitale, V.
(author)
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von Kienlin, A.
(author)
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Waite, A. P.
(author)
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Wang, P.
(author)
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Wilson-Hodge, C.
(author)
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Winer, B. L.
(author)
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Wood, K. S.
(author)
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Wu, X. F.
(author)
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Yamazaki, R.
(author)
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Yang, ZhaoyuStockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)zhaoyu
(author)
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Ylinen, TomiKTH,Partikel- och astropartikelfysik(Swepub:kth)u1vmovqg
(author)
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Ziegler, M.
(author)
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Stockholms universitetInstitutionen för astronomi
(creator_code:org_t)
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In:Astrophysical Journal729:2, s. 114-0004-637X1538-4357
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- By the author/editor
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Ackermann, M.
-
Ajello, M.
-
Asano, K.
-
Axelsson, Magnus
-
Baldini, L.
-
Ballet, J.
-
show more...
-
Barbiellini, G.
-
Baring, M. G.
-
Bastieri, D.
-
Bechtol, K.
-
Bellazzini, R.
-
Berenji, B.
-
Bhat, P. N.
-
Bissaldi, E.
-
Blandford, R. D.
-
Bonamente, E.
-
Borgland, A. W.
-
Bouvier, A.
-
Bregeon, J.
-
Brez, A.
-
McGlynn, Sinead
-
Brigida, M.
-
Bruel, P.
-
Buehler, R.
-
Buson, S.
-
Caliandro, G. A.
-
Cameron, R. A.
-
Caraveo, P. A.
-
Carrigan, S.
-
Casandjian, J. M ...
-
Cecchi, C.
-
Celik, O.
-
Chaplin, V.
-
Charles, E.
-
Chekhtman, A.
-
Chiang, J.
-
Ciprini, S.
-
Claus, R.
-
Cohen-Tanugi, J.
-
Connaughton, V.
-
Conrad, Jan
-
Cutini, S.
-
Dermer, C. D.
-
De Angelis, A.
-
De Palma, F.
-
Dingus, B. L.
-
Silva, E. Do Cou ...
-
Drell, P. S.
-
Dubois, R.
-
Favuzzi, C.
-
Fegan, S. J.
-
Ferrara, E. C.
-
Focke, W. B.
-
Frailis, M.
-
Fukazawa, Y.
-
Funk, S.
-
Fusco, P.
-
Gargano, F.
-
Gasparrini, D.
-
Gehrels, N.
-
Germani, S.
-
Giglietto, N.
-
Giordano, F.
-
Giroletti, M.
-
Glanzman, T.
-
Godfrey, G.
-
Goldstein, A.
-
Granot, J.
-
Greiner, J.
-
Grenier, I. A.
-
Grove, J. E.
-
Guiriec, S.
-
Hadasch, D.
-
Hanabata, Y.
-
Harding, A. K.
-
Hayashi, K.
-
Hayashida, M.
-
Hays, E.
-
Horan, D.
-
Hughes, R. E.
-
Itoh, R.
-
Johannesson, G.
-
Johnson, A. S.
-
Johnson, W. N.
-
Kamae, T.
-
Katagiri, H.
-
Kataoka, J.
-
Kippen, R. M.
-
Knoedlseder, J.
-
Kocevski, D.
-
Kouveliotou, C.
-
Kuss, M.
-
Lande, J.
-
Latronico, L.
-
Lee, S. -H
-
Garde, Maja Llen ...
-
Longo, F.
-
Loparco, F.
-
Lovellette, M. N ...
-
Lubrano, P.
-
Makeev, A.
-
Mazziotta, M. N.
-
McBreen, S.
-
McEnery, J. E.
-
McGlynn, S.
-
Meegan, C.
-
Mehault, J.
-
Meszaros, P.
-
Michelson, P. F.
-
Mizuno, T.
-
Monte, C.
-
Moretti, Elena, ...
-
Moretti, E.
-
Morselli, A.
-
Moskalenko, I. V ...
-
Murgia, S.
-
Nakajima, H.
-
Nakamori, T.
-
Naumann-Godo, M.
-
Nishino, S.
-
Nolan, P. L.
-
Norris, J. P.
-
Nuss, E.
-
Ohno, M.
-
Ohsugi, T.
-
Okumura, A.
-
Omodei, N.
-
Orlando, E.
-
Ormes, J. F.
-
Ozaki, M.
-
Paciesas, W. S.
-
Paneque, D.
-
Panetta, J. H.
-
Parent, D.
-
Pelassa, V.
-
Pepe, M.
-
Pesce-Rollins, M ...
-
Petrosian, V.
-
Piron, F.
-
Porter, T. A.
-
Preece, R.
-
Racusin, J. L.
-
Raino, S.
-
Rando, R.
-
Rau, A.
-
Razzano, M.
-
Razzaque, S.
-
Reimer, A.
-
Reimer, O.
-
Reposeur, T.
-
Reyes, L. C.
-
Ripken, Joachim
-
Ritz, S.
-
Roth, M.
-
Ryde, Felix
-
Sadrozinski, H. ...
-
Sander, A.
-
Scargle, J. D.
-
Strickman, M. S.
-
Suson, D. J.
-
Tajima, H.
-
Takahashi, H.
-
Tanaka, T.
-
Tanaka, Y.
-
Thayer, J. B.
-
Thayer, J. G.
-
Tibaldo, L.
-
Tierney, D.
-
Toma, K.
-
Torres, D. F.
-
Tosti, G.
-
Tramacere, A.
-
Uchiyama, Y.
-
Uehara, T.
-
Usher, T. L.
-
Vandenbroucke, J ...
-
van der Horst, A ...
-
Vasileiou, V.
-
Vilchez, N.
-
Vitale, V.
-
von Kienlin, A.
-
Waite, A. P.
-
Wang, P.
-
Wilson-Hodge, C.
-
Winer, B. L.
-
Wood, K. S.
-
Wu, X. F.
-
Yamazaki, R.
-
Yang, Zhaoyu
-
Ylinen, Tomi
-
Ziegler, M.
-
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