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

Harvey, Max; Rulten, Cameron B; Chadwick, Paula M

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


Max Harvey
PGR Student Doctor of Philosophy


We search for γ-ray emission from 114 Galactic high-mass X-ray binaries, including four well studied catalogued sources, in 12.5 yr of Fermi-LAT data in conjunction with the 10-yr point source catalogue. Where a γ-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 γ-ray excesses coincident with 20 high-mass X-ray binaries where there is little or no prior evidence for γ-ray emission. However, we find that many of these are false positives caused by source confusion or the γ-ray background. None the less, tentative but promising indicators of γ-ray emission are identified for several new systems, notably including 1A 0535+262, RX J2030.5+4751, and SAX J1324.4−6200.

Journal Article Type Article
Acceptance Date Feb 9, 2022
Online Publication Date Feb 18, 2022
Publication Date 2022-05
Deposit Date May 26, 2022
Publicly Available Date May 26, 2022
Journal Monthly Notices of the Royal Astronomical Society
Print ISSN 0035-8711
Electronic ISSN 1365-2966
Publisher Royal Astronomical Society
Peer Reviewed Peer Reviewed
Volume 512
Issue 1
Pages 1141-1168
Public URL


Published Journal Article (9.2 Mb)

Copyright Statement
This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2022 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.

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