Periodic emission from the gamma-ray binary 1FGL J1018.6-5856
Periodic emission from the gamma-ray binary 1FGL J1018.6-5856
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.
189-193
Consortium, Fermi LAT
25ad565b-5a83-4be1-b79a-148856a2a590
Coe, M.J.
04dfb23b-1456-46a3-9242-5cee983471d5
di Mille, F.
d6a155e5-a174-4b2e-a112-ea5164257448
Edwards, P.G.
0951a58c-3779-4437-9ad7-8f3961e1f400
Filopovic, M.
699f0250-6055-4113-9b18-19c26e25697a
Payne, J.L.
1c30f711-64be-4ec4-b5a7-c0df11dcf04c
Stevens, J.
29a165ee-3c6f-49cc-a261-9769be893dbb
Torres, M.
6e97da82-cff5-4b93-8bb6-4718be2bce7c
13 January 2012
Consortium, Fermi LAT
25ad565b-5a83-4be1-b79a-148856a2a590
Coe, M.J.
04dfb23b-1456-46a3-9242-5cee983471d5
di Mille, F.
d6a155e5-a174-4b2e-a112-ea5164257448
Edwards, P.G.
0951a58c-3779-4437-9ad7-8f3961e1f400
Filopovic, M.
699f0250-6055-4113-9b18-19c26e25697a
Payne, J.L.
1c30f711-64be-4ec4-b5a7-c0df11dcf04c
Stevens, J.
29a165ee-3c6f-49cc-a261-9769be893dbb
Torres, M.
6e97da82-cff5-4b93-8bb6-4718be2bce7c
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), .
(doi:10.1126/science.1213974).
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.
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Published date: 13 January 2012
Organisations:
Astronomy Group
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Local EPrints ID: 337394
URI: http://eprints.soton.ac.uk/id/eprint/337394
ISSN: 0036-8075
PURE UUID: 5c119ce2-f725-404f-9c85-742e41fd7800
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Date deposited: 25 Apr 2012 11:03
Last modified: 15 Mar 2024 02:35
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Contributors
Author:
Fermi LAT Consortium
Author:
F. di Mille
Author:
P.G. Edwards
Author:
M. Filopovic
Author:
J.L. Payne
Author:
J. Stevens
Author:
M. Torres
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