期刊
SCIENCE
卷 335, 期 6065, 页码 189-193出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1213974
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资金
- NASA (United States)
- U.S. Department of Energy (United States)
- CEA/Irfu (France)
- IN2P3/CNRS (France)
- ASI (Italy)
- INFN (Italy)
- MEXT (Japan)
- KEK (Japan)
- JAXA (Japan)
- K. A. Wallenberg Foundation
- Swedish Research Council
- National Space Board (Sweden)
- CNES in France
- European Community [ERC-StG-200911]
- ICREA Funding Source: Custom
- STFC [ST/G003084/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/G003084/1] Funding Source: researchfish
- Grants-in-Aid for Scientific Research [11J10312, 10J08529] Funding Source: KAKEN
Gamma-ray binaries are stellar systems containing a neutron star or black hole, with gamma-ray emission produced by an interaction between the components. These systems are rare, even though binary evolution models predict dozens in our Galaxy. A search for gamma-ray binaries with the Fermi Large Area Telescope (LAT) shows that 1FGL J1018.6-5856 exhibits intensity and spectral modulation with a 16.6-day period. We identified a variable x-ray counterpart, which shows a sharp maximum coinciding with maximum gamma-ray emission, as well as an O6V((f)) star optical counterpart and a radio counterpart that is also apparently modulated on the orbital period. 1FGL J1018.6-5856 is thus a gamma-ray binary, and its detection suggests the presence of other fainter binaries in the Galaxy.
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