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- Abdo, A. A. (author)
DISCOVERY OF HIGH-ENERGY GAMMA-RAY EMISSION FROM THE BINARY SYSTEM PSR B1259-63/LS 2883 AROUND PERIASTRON WITH FERMI
- Article/chapterEnglish2011
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- 2011
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- LIBRIS-ID:oai:DiVA.org:su-66599
- https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-66599URI
- https://doi.org/10.1088/2041-8205/736/1/L11DOI
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- Language:English
- Summary in:English
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- authorCount :172
- We report on the discovery of >= 100 MeV gamma-rays from the binary system PSR B1259-63/LS 2883 using the Large Area Telescope (LAT) on board Fermi. The system comprises a radio pulsar in orbit around a Be star. We report on LAT observations from near apastron to similar to 128 days after the time of periastron, t(p), on 2010 December 15. No gamma-ray emission was detected from this source when it was far from periastron. Faint gamma-ray emission appeared as the pulsar approached periastron. At similar to t(p) + 30 days, the >= 100 MeV gamma-ray flux increased over a period of a few days to a peak flux 20-30 times that seen during the pre-periastron period, but with a softer spectrum. For the following month, it was seen to be variable on daily timescales, but remained at similar to(1-4) x 10(-6) cm(-2) s(-1) before starting to fade at similar to t(p) + 57 days. The total gamma-ray luminosity observed during this period is comparable to the spin-down power of the pulsar. Simultaneous radio and X-ray observations of the source showed no corresponding dramatic changes in radio and X-ray flux between the pre-periastron and post-periastron flares. We discuss possible explanations for the observed gamma-ray-only flaring of the source.
Subject headings and genre
- NATURVETENSKAP Fysik hsv//swe
- NATURAL SCIENCES Physical Sciences hsv//eng
- binaries: eclipsing
- gamma rays: stars
- pulsars: individual (PSR B1259-63)
- X-rays: binaries
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- Ackermann, M. (author)
- Ajello, M. (author)
- Allafort, A. (author)
- Ballet, J. (author)
- Barbiellini, G. (author)
- Bastieri, D. (author)
- Bechtol, K. (author)
- Bellazzini, R. (author)
- Berenji, B. (author)
- Blandford, R. D. (author)
- Bonamente, E. (author)
- Borgland, A. W. (author)
- Bregeon, J. (author)
- Brigida, M. (author)
- Bruel, P. (author)
- Buehler, R. (author)
- Buson, S. (author)
- Caliandro, G. A. (author)
- Cameron, R. A. (author)
- Camilo, F. (author)
- Caraveo, P. A. (author)
- Cecchi, C. (author)
- Charles, E. (author)
- Chaty, S. (author)
- Chekhtman, A. (author)
- Chernyakova, M. (author)
- Cheung, C. C. (author)
- Chiang, J. (author)
- Ciprini, S. (author)
- Claus, R. (author)
- Cohen-Tanugi, J. (author)
- Cominsky, L. R. (author)
- Corbel, S. (author)
- Cutini, S. (author)
- D'Ammando, F. (author)
- de Angelis, A. (author)
- den Hartog, P. R. (author)
- de Palma, F. (author)
- Dermer, C. D. (author)
- Digel, S. W. (author)
- do Couto e Silva, E. (author)
- Dormody, M. (author)
- Drell, P. S. (author)
- Drlica-Wagner, A. (author)
- Dubois, R. (author)
- Dubus, G. (author)
- Dumora, D. (author)
- Enoto, T. (author)
- Espinoza, C. M. (author)
- Favuzzi, C. (author)
- Fegan, S. J. (author)
- Ferrara, E. C. (author)
- Focke, W. B. (author)
- Fortin, P. (author)
- Fukazawa, Y. (author)
- Funk, S. (author)
- Fusco, P. (author)
- Gargano, F. (author)
- Gasparrini, D. (author)
- Gehrels, N. (author)
- Germani, S. (author)
- Giglietto, N. (author)
- Giommi, P. (author)
- Giordano, F. (author)
- Giroletti, M. (author)
- Glanzman, T. (author)
- Godfrey, G. (author)
- Grenier, I. A. (author)
- Grondin, M. -H (author)
- Grove, J. E. (author)
- Grundstrom, E. (author)
- Guiriec, S. (author)
- Gwon, C. (author)
- Hadasch, D. (author)
- Harding, A. K. (author)
- Hayashida, M. (author)
- Hays, E. (author)
- Johannesson, G. (author)
- Johnson, A. S. (author)
- Johnson, T. J. (author)
- Johnston, S. (author)
- Kamae, T. (author)
- Katagiri, H. (author)
- Kataoka, J. (author)
- Keith, M. (author)
- Kerr, M. (author)
- Knodlseder, J. (author)
- Kramer, M. (author)
- Kuss, M. (author)
- Lande, J. (author)
- Lee, S. -H (author)
- Lemoine-Goumard, M. (author)
- Longo, F. (author)
- Loparco, F. (author)
- Lovellette, M. N. (author)
- Lubrano, P. (author)
- Manchester, R. N. (author)
- Marelli, M. (author)
- Mazziotta, M. N. (author)
- Michelson, P. F. (author)
- Mitthumsiri, W. (author)
- Mizuno, T. (author)
- Moiseev, A. A. (author)
- Monte, C. (author)
- Monzani, M. E. (author)
- Morselli, A. (author)
- Moskalenko, I. V. (author)
- Murgia, S. (author)
- Nakamori, T. (author)
- Naumann-Godo, M. (author)
- Neronov, A. (author)
- Nolan, P. L. (author)
- Norris, J. P. (author)
- Noutsos, A. (author)
- Nuss, E. (author)
- Ohsugi, T. (author)
- Okumura, A. (author)
- Omodei, N. (author)
- Orlando, E. (author)
- Paneque, D. (author)
- Parent, D. (author)
- Pesce-Rollins, M. (author)
- Pierbattista, M. (author)
- Piron, F. (author)
- Porter, T. A. (author)
- Possenti, A. (author)
- Raino, S. (author)
- Rando, R. (author)
- Ray, P. S. (author)
- Razzano, M. (author)
- Razzaque, S. (author)
- Reimer, A. (author)
- Reimer, O. (author)
- Reposeur, T. (author)
- Ritz, S. (author)
- Sadrozinski, H. F. -W (author)
- Scargle, J. D. (author)
- Sgro, C. (author)
- Shannon, R. (author)
- Siskind, E. J. (author)
- Smith, P. D. (author)
- Spandre, G. (author)
- Spinelli, P. (author)
- Strickman, M. S. (author)
- Suson, D. J. (author)
- Takahashi, H. (author)
- Tanaka, T. (author)
- Thayer, J. G. (author)
- Thayer, J. B. (author)
- Thompson, D. J. (author)
- Thorsett, S. E. (author)
- Tibaldo, L. (author)
- Tibolla, O. (author)
- Torres, D. F. (author)
- Tosti, G. (author)
- Troja, E. (author)
- Uchiyama, Y. (author)
- Usher, T. L. (author)
- Vandenbroucke, J. (author)
- Vasileiou, V. (author)
- Vianello, G. (author)
- Vitale, V. (author)
- Waite, A. P. (author)
- Wang, P. (author)
- Winer, B. L. (author)
- Wolff, M. T. (author)
- Wood, D. L. (author)
- Wood, K. S. (author)
- Yang, ZhaoyuStockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)zhaoyu (author)
- Ziegler, M. (author)
- Zimmer, StephanStockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)stzi0820 (author)
- Stockholms universitetFysikum (creator_code:org_t)
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- In:Astrophysical Journal Letters736:1, s. L11-2041-8205
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