Modulated High-Energy Gamma-Ray Emission from the Microquasar Cygnus X-3

Author:

,Abdo A. A.,Ackermann M.,Ajello M.,Axelsson M.,Baldini L.,Ballet J.,Barbiellini G.,Bastieri D.,Baughman B.M.,Bechtol K.,Bellazzini R.,Berenji B.,Blandford R. D.,Bloom E. D.,Bonamente E.,Borgland A. W.,Brez A.,Brigida M.,Bruel P.,Burnett T. H.,Buson S.,Caliandro G. A.,Cameron R. A.,Caraveo P. A.,Casandjian J. M.,Cecchi C.,Çelik Ö.,Chaty S.,Cheung C. C.,Chiang J.,Ciprini S.,Claus R.,Cohen Tanugi J.,Cominsky L. R.,Conrad J.,Corbel S.,Corbet R.,Dermer C. D.,de Palma F.,Digel S.W.,do Couto e Silva E.,Drell P. S.,Dubois R.,Dubus G.,Dumora D.,Farnier C.,Favuzzi C.,Fegan S. J.,Focke W. B.,Fortin P.,Frailis M.,Fusco P.,Gargano F.,Gehrels N.,Germani S.,Giavitto G.,Giebels B.,Giglietto N.,Giordano F.,Glanzman T.,Godfrey G.,Grenier I. A.,Grondin M.-H.,Grove J. E.,Guillemot L.,Guiriec S.,Hanabata Y.,Harding A.K.,Hayashida M.,Hays E.,Hill A. B.,Hjalmarsdotter L.,Horan D.,Hughes R. E.,Jackson M. S.,Jóhannesson G.,Johnson A. S.,Johnson T. J.,Johnson W. N.,Kamae T.,Katagiri H.,Kawai N.,Kerr M.,Knödlseder J.,Kocian M. L.,Koerding E.,Kuss M.,Lande J.,Latronico L.,Lemoine Goumard M.,Longo F.,Loparco F.,Lott B.,Lovellette M. N.,Lubrano P.,Madejski G. M.,Makeev A.,Marchand L.,Marelli M.,Moerbeck W. Max,Mazziotta M. N.,McColl N.,McEnery J. E.,Meurer C.,Michelson P. F.,Migliari S.,Mitthumsiri W.,Mizuno T.,Monte C.,Monzani M. E.,Morselli A.,Moskalenko I. V.,Murgia S.,Nolan P. L.,Norris J. P.,Nuss E.,Ohsugi T.,Omodei N.,Ong R. A.,Ormes J. F.,Paneque D.,Parent D.,Pelassa V.,Pepe M.,Rollins M. Pesce,Piron F.,Pooley G.,Porter T. A.,Pottschmidt K.,Rainò S.,Rando R.,Ray P. S.,Razzano M.,Rea N.,Readhead A.,Reimer A.,Reimer O.,Richards J. L.,Rochester L. S.,Rodriguez J.,Rodriguez A. Y.,Romani R. W.,Ryde F.,Sadrozinski H. F.-W.,Sander A.,Parkinson P. M. Saz,Sgrò C.,Siskind E. J.,Smith D. A.,Smith P. D.,Spinelli P.,Starck J.-L.,Stevenson M.,Strickman M. S.,Suson D. J.,Takahashi H.,Tanaka T.,Thayer J. B.,Thompson D. J.,Tibaldo L.,Tomsick J. A.,Torres D. F.,Tosti G.,Tramacere A.,Uchiyama Y.,Usher T. L.,Vasileiou V.,Vilchez N.,Vitale V.,Waite A. P.,Wang P.,Wilms J.,Winer B. L.,Wood K. S.,Ylinen T.,Ziegler M.

Abstract

Microquasar Spotted Microquasars are binary star systems where a normal star sheds matter onto a neutron star or a black hole, generating x-ray radiation and jets of material moving at relativistic speeds. Microquasars have proved difficult to detect in high-energy gamma rays (> 100 megaelectron volts). Using the Fermi Large Area Telescope, Abdo et al. (p. 1512 , published online 26 November; see the Perspective by Bignami ) now report the detection of variable gamma-ray emission from the microquasar Cygnus X-3. The gamma-ray flux is modulated at the orbital period of Cygnus X-3, and its variation is correlated with the radio emission originating from the microquasar's relativistic jets.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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