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Periodic Emission from the Gamma-Ray Binary 1FGL J1018.6-5856
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Number of Authors: 1552012 (English)In: Science, ISSN 0036-8075, E-ISSN 1095-9203, Vol. 335, no 6065, p. 189-193Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
2012. Vol. 335, no 6065, p. 189-193
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Physical Sciences
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URN: urn:nbn:se:su:diva-162434DOI: 10.1126/science.1213974ISI: 000299033100045PubMedID: 22246769OAI: oai:DiVA.org:su-162434DiVA, id: diva2:1274546
Available from: 2019-01-02 Created: 2019-01-02 Last updated: 2019-01-02Bibliographically approved

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Ajello, M.Bastieri, D.Buehler, R.Caraveo, P. A.Chaty, S.Cutini, S.de Luca, A.de Palma, F.do Couto e Silva, E.Dubus, G.Fukazawa, Y.Funk, S.Gargano, F.Gasparrini, D.Giroletti, M.Hill, A. B.Johannesson, G.Kerr, M.Loparco, F.Mazziotta, M. N.Morselli, A.Moskalenko, I. V.Okumura, A.Omodei, N.Pesce-Rollins, M.Reimer, A.Reimer, O.Spandre, G.Takahashi, H.Thompson, D. J.Tibaldo, L.Torres, D. F.Vianello, G.Yang, ZhaoyuZimmer, StephanCoe, M. J.Di Mille, F.Torres, M. A. P.
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Department of PhysicsThe Oskar Klein Centre for Cosmo Particle Physics (OKC)
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