Periodic emission from the gamma-ray binary 1FGL J1018.6-5856
Consortium, Fermi LAT, Coe, M.J., di Mille, F., Edwards, P.G., Filopovic, M., Payne, J.L., Stevens, J. and Torres, M. (2012) Periodic emission from the gamma-ray binary 1FGL J1018.6-5856. Science , 335, (6065), 189-193. (doi:10.1126/science.1213974 ).
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Description/Abstract
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.
| Item Type: | Article |
|---|---|
| ISSNs: | 0036-8075 (print) 1095-9203 (electronic) |
| Related URLs: | |
| Subjects: | Q Science > QC Physics |
| Divisions: | Faculty of Physical and Applied Science > Physics and Astronomy > Astronomy Group |
| Item ID: | 337394 |
| Date Deposited: | 25 Apr 2012 11:03 |
| Last Modified: | 10 May 2012 12:37 |
| Contributors: | Consortium, Fermi LAT (Author) Coe, M.J. (Author) di Mille, F. (Author) Edwards, P.G. (Author) Filopovic, M. (Author) Payne, J.L. (Author) Stevens, J. (Author) Torres, M. (Author) |
| Date: | 13 January 2012 |
| Status: | Published |
| URI: | http://eprints.soton.ac.uk/id/eprint/337394 |
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