Journal
SCIENCE
Volume 326, Issue 5959, Pages 1512-1516Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1182174
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Funding
- NASA
- Department of Energy in the United States
- CEA/Institut de Recherches sur les lois Fondamentales de l'Univers and l'Institut National de Physique Nucleaire et de Physique des Particules/CNRS in France
- Agenzia Spaziale Italiana and Istituto Nazionale di Fisica Nucleare in Italy
- Ministry of Education, Culture, Sports, Science and Technology
- National Laboratory for High Energy Physics
- Japan Aerospace Exploration Agency in Japan
- Wallenberg Foundation
- Swedish Research Council
- National Space Board in Sweden
- Istituto Nazionale di Astrofisica in Italy
- Centre National d'Etudes Spatiales in France
- K. A. Wallenberg Foundation
- European Community [ERC-StG-200911]
- Direct For Mathematical & Physical Scien
- Division Of Astronomical Sciences [808050] Funding Source: National Science Foundation
- ICREA Funding Source: Custom
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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.
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