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arXiv · 2202.04368

The Galactic high mass X-ray binary population with Fermi -LAT

Max Harvey·Cameron B. Rulten·Paula M. Chadwick
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Abstract

We search for gamma-ray emission from 114 Galactic high mass X-ray binaries, including 4 well studied catalogued sources, in 12.5 years of Fermi-LAT data in conjunction with the 10-year point source catalogue. Where a gamma-ray excess appears to be spatially coincident with an X-ray binary, further investigation is performed to ascertain whether this excess is the product of physical processes within the binary system itself. We identify gamma-ray excesses coincident with 20 high mass X-ray binaries where there is little or no prior evidence for gamma-ray emission. However, we find that many of these are false positives caused by source confusion or the gamma-ray background. Nonetheless, tentative but promising indicators of gamma-ray emission are identified for several new systems, notably including 1A 0535+262, RX J2030.5+4751 and SAX J1324.4-6200.

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Max Harvey, Cameron B. Rulten, Paula M. Chadwick. 2022-02-09. The Galactic high mass X-ray binary population with Fermi -LAT. https://doi.org/10.1093/mnras%2Fstac375

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