Abstract : Microquasars are accreting black holes or neutron stars in binary systems with associated relativistic jets. Despite their frequent outburst activity, they have never been unambiguously detected emitting high-energy gamma rays. The Fermi Large Area Telescope (LAT) has detected a variable high-energy source coinciding with the position of the x-ray binary and microquasar Cygnus X-3. Its identification with Cygnus X-3 is secured by the detection of its orbital period in gamma rays, as well as the correlation of the LAT flux with radio emission from the relativistic jets of Cygnus X-3. The gamma-ray emission probably originates from within the binary system, opening new areas in which to study the formation of relativistic jets.
Document type :
Journal articles
Science, American Association for the Advancement of Science, 2009, 326, pp.1512-1516. <10.1126/science.1182174>
http://hal.in2p3.fr/in2p3-00444982
Contributor : Virginie Mas <>
Submitted on : Thursday, January 7, 2010 - 3:38:44 PM
Last modification on : Thursday, September 17, 2015 - 1:05:36 AM
A. A. Abdo, Markus Ackermann, Marco Ajello, M. Axelsson, Luca Baldini, et al.. Modulated High-Energy Gamma-Ray Emission from the Microquasar Cygnus X-3. Science, American Association for the Advancement of Science, 2009, 326, pp.1512-1516. <10.1126/science.1182174>. <in2p3-00444982>
