A. ABDO, A.; ACKERMANN, Markus; AJELLO, Marco; ALLAFORT, A.; BALLET, Jean; BARBIELLINI, Guido; BASTIERI, D.; BECHTOL, K.; BELLAZZINI, R.; BERENJI, B.; D. BLANDFORD, R.; BONAMENTE, E.; W. BORGLAND, A.; BREGEON, J.; BRIGIDA, M.; BRUEL, Pascal; BUEHLER, R.; BUSON, S.; A. CALIANDRO, G.; A. CAMERON, R.; CAMILO, F.; CARAVEO, P. A.; CECCHI, C.; CHARLES, E.; CHATY, S.; CHEKHTMAN, A.; CHERNYAKOVA, M.; C. CHEUNG, C.; CHIANG, J.; CIPRINI, S.; CLAUS, R.; COHEN-TANUGI, J.; R. COMINSKY, L.; CORBEL, S.; CUTINI, S.; D'AMMANDO, F.; DE ANGELIS, A.; R. DEN HARTOG, P.; DE PALMA, F.; D. DERMER, C.; W. DIGEL, S.; DO COUTO E SILVA2, E.; DORMODY, M.; S. DRELL, P.; DRLICA-WAGNER, A.; DUBOIS, R.; DUBUS, G.; DUMORA, D.; ENOTO, T.; M. ESPINOZA, C.; FAVUZZI, C.; J. FEGAN, S.; C. FERRARA, E.; B. FOCKE, W.; FORTIN, P.; FUKAZAWA, Y.; FUNK, S.; FUSCO, P.; GARGANO, F.; GASPARRINI, D.; GEHRELS, N.; GERMANI, S.; GIGLIETTO, N.; GIOMMI, P.; GIORDANO, F.; GIROLETTI, M.; GLANZMAN, T.; GODFREY, G.; A. GRENIER, I.; GRONDIN, M.-H.; E. GROVE, J.; GRUNDSTROM, E.; GUIRIEC, S.; GWON, C.; HADASCH, D.; K. HARDING, A.; HAYASHIDA, M.; HAYS, E.; J'OHANNESSON, G.; S. JOHNSON, A.; J. JOHNSON, T.; JOHNSTON, S.; KAMAE, T.; KATAGIRI, H.; KATAOKA, J.; KEITH, M.; KERR, M.; KNÖDLSEDER, Jürgen; KRAMER, M.; KUSS, M.; LANDE, J.; LEE, S.-H.; LEMOINE-GOUMARD, M.; LONGO, F.; LOPARCO, F.; N. LOVELLETTE, M.; LUBRANO, P.; N. MANCHESTER, R.; MARELLI, M.; N. MAZZIOTTA, M.; F. MICHELSON, P.; MITTHUMSIRI, W.; MIZUNO, T.; A. MOISEEV, A.; MONTE, C.; E. MONZANI, M.; MORSELLI, A.; V. MOSKALENKO, I.; MURGIA, S.; NAKAMORI, T.; NAUMANN-GODO, M.; NERONOV, A.; L. NOLAN, P.; P. NORRIS, J.; NOUTSOS, A.; NUSS, E.; OHSUGI, T.; OKUMURA, A.; OMODEI, N.; ORLANDO, E.; PANEQUE, D.; PARENT, D.; PESCE-ROLLINS, M.; PIERBATTISTA, M.; PIRON, F.; PORTER, T.A.; POSSENTI, A.; RAIN'O, S.; RANDO, R.; S. RAY, P.; RAZZANO, M.; RAZZAQUE, S.; REIMER, A.; REIMER, O.; REPOSEUR, T.; RITZ, S.; F.-W. SADROZINSKI, H.; D. SCARGLE, J.; SGR'O, C.; SHANNON, R.; J. SISKIND, E.; D. SMITH, P.; SPANDRE, G.; SPINELLI, P.; S. STRICKMAN, M.; J. SUSON, D.; TAKAHASHI, H.; TANAKA, T.; G. THAYER, J.; B. THAYER, J.; J. THOMPSON, D.; E. THORSETT, S.; TIBALDO, L.; TIBOLLA, O.; F. TORRES, D.; TOSTI, G.; TROJA, E.; UCHIYAMA, Y.; L. USHER, T.; VANDENBROUCKE, J.; VASILEIOU, V.; VIANELLO, G.; VITALE, V.; P. WAITE, A.; WANG, P.; L. WINER, B.; T. WOLFF, M.; L. WOOD, D.; S. WOOD, K.; YANG, Z.; ZIEGLER, M.; ZIMMER, S.

doi:10.1088/2041-8205/736/1/L11

Métadonnées

Afficher la notice complète

Licence d’utilisation du document

Langue

Article de revue

Ce document a été publié dans

The Astrophysical journal letters. 2011-07-20, vol. 736, p. L11

Bristol : IOP Publishing

Résumé en anglais

We report on the discovery of 100 MeV γ -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 ∼128 days after the time of periastron, tp, on 2010 December 15. No γ -ray emission was detected from this source when it was far from periastron. Faint γ -ray emission appeared as the pulsar approached periastron. At ∼tp + 30 days, the 100 MeV γ -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 ∼(1-4) × 10−6 cm−2 s−1 before starting to fade at ∼tp +57 days. The total γ -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 γ -ray-only flaring of the source.< Réduire

Métadonnées

Licence d’utilisation du document

DISCOVERY OF HIGH-ENERGY GAMMA-RAY EMISSION FROM THE BINARY SYSTEM PSR B1259-63/LS 2883 AROUND PERIASTRON WITH FERMI

Langue

Ce document a été publié dans

Résumé en anglais

DOI

Origine

Unités de recherche