Discovery of the Galactic High-Mass Gamma-ray Binary 4FGL J1405.1-6119

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dc.contributor.authorCorbet, R. H. D.
dc.contributor.authorChomiuk, L.
dc.contributor.authorCoe, M. J.
dc.contributor.authorColey, J. B.
dc.contributor.authorDubus, G.
dc.contributor.authorEdwards, P. G.
dc.contributor.authorMartin, P.
dc.contributor.authorMcBride, V. A.
dc.contributor.authorStevens, J.
dc.contributor.authorStrader, J.
dc.contributor.authorTownsend, L. J.
dc.date.accessioned2019-11-14T15:24:20Z
dc.date.available2019-11-14T15:24:20Z
dc.date.issued2019-08-28
dc.description.abstractWe report the identification from multi-wavelength observations of the Fermi Large Area Telescope (LAT) source 4FGL J1405.1-6119 (= 3FGL J1405.4-6119) as a high-mass gamma-ray binary. Observations with the LAT show that gamma-ray emission from the system is modulated at a period of 13.7135 ± 0.0019 days, with the presence of two maxima per orbit with different spectral properties. X-ray observations using the Neil Gehrels Swift Observatory X-ray Telescope (XRT) show that X-ray emission is also modulated at this period, but with a single maximum that is closer to the secondary lower-energy gamma-ray maximum. A radio source, coincident with the X-ray source is also found from Australia Telescope Compact Array (ATCA) observations, and the radio emission is modulated on the gamma-ray period with similar phasing to the X-ray emission. A large degree of interstellar obscuration severely hampers optical observations, but a near-infrared counterpart is found. Nearinfrared spectroscopy indicates an O6 III spectral classification. This is the third gamma-ray binary to be discovered with the Fermi LAT from periodic modulation of the gamma-ray emission, the other two sources also have early O star, rather than Be star, counterparts. We consider at what distances we can detect such modulated gamma-ray emission with the LAT, and examine constraints on the gamma-ray binary population of the Milky Way.en_US
dc.description.urihttps://arxiv.org/pdf/1908.10764.pdfen_US
dc.format.extent14 pagesen_US
dc.genrejournal articles preprintsen_US
dc.identifierdoi:10.13016/m2yoip-ppsg
dc.identifier.citationCorbet, R.H.D., Chomiuk, L., Coe, M.J., Coley, J.B., Dubus, G., Edwards, P.G., Martin, P., McBride, V.A., Stevens, J., Strader, J., and Townsend, L.J, Discovery of the Galactic High-mass Gamma-Ray Binary 4FGL J1405.1-6119, 2019, https://ui.adsabs.harvard.edu/abs/2019ApJ...884...93Cen_US
dc.identifier.urihttp://hdl.handle.net/11603/16286
dc.language.isoen_USen_US
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC Center for Space Sciences and Technology
dc.relation.ispartofUMBC Faculty Collection
dc.rightsThis item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author.
dc.subjectstars: individual (CXOU J053600.0-673507, 4FGL J1405.1-6119)en_US
dc.subjectstars: neutronen_US
dc.subjectgamma-rays: starsen_US
dc.titleDiscovery of the Galactic High-Mass Gamma-ray Binary 4FGL J1405.1-6119en_US
dc.typeTexten_US

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