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.
Type de document :
Article dans une revue
Science, American Association for the Advancement of Science, 2009, 326, pp.1512-1516. 〈10.1126/science.1182174〉
http://hal.in2p3.fr/in2p3-00444982
Contributeur : Virginie Mas
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Soumis le : jeudi 7 janvier 2010 - 15:38:44
Dernière modification le : mardi 10 octobre 2017 - 16:16:03
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〉
