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

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

Abstract

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.

Citation

Harvey, M., Rulten, C. B., & Chadwick, P. M. (2022). The Galactic high mass X-ray binary population with Fermi-LAT. Monthly Notices of the Royal Astronomical Society, 512(1), 1141-1168. https://doi.org/10.1093/mnras/stac375

• 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
• DOI: https://doi.org/10.1093/mnras/stac375
• Public URL: https://durham-repository.worktribe.com/output/1205640