2022/02/09 by Max Harvey, C. B. Rulten, Cameron B. Rulten +2
Medicine · Physics and Astronomy · #Astronomy #Astrophysical Phenomena and Observations #Astrophysics #Astrophysics and Cosmic Phenomena #Binary number #Confusion #Fermi Gamma-ray Space Telescope #Gamma-ray bursts and supernovae #Medicine #Neutron star #Optics #Physics #Point source #Population #X-ray #X-ray binary #astro-ph.HE
paper · pdf · doi:10.1093/mnras/stac375
32 pages, 36 figures. Accepted for publication in Monthly Notices of the Royal Astronomical Society
arxiv created 2022/02/09 · openalex created_date 2022/02/09 · openalex publication_date 2022/02/09 · arxiv updated 2022/03/02 · openalex updated_date 2026/08/05
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.