Max Harvey
V404 Cygni with Fermi-LAT
Harvey, Max; Rulten, Cameron B; Chadwick, Paula M
Authors
Dr Cameron Rulten cameron.b.rulten@durham.ac.uk
Post Doctoral Research Associate
Professor Paula Chadwick p.m.chadwick@durham.ac.uk
Head Of Department
Abstract
We revisit the well-studied outburst of the low-mass X-ray binary (LMXB) system V404 Cygni, and claims of γ-ray excesses observed with the Fermi-LAT instrument. Upon analysing an 11.5 yr data set with the 8-yr LAT point source catalogue and 8-yr background models, we find no evidence to suggest that there is high energy γ-ray emission during the outburst period (or at any other time) from V404 Cygni. This is due to the proximity of V404 Cygni to the γ-ray emitting blazar B2023+336, a luminous source approximately 0.3○ away, which causes source confusion at the position of V404 Cygni, the luminous γ-ray background, and the use of older background models and catalogues in previous studies.
Citation
Harvey, M., Rulten, C. B., & Chadwick, P. M. (2021). V404 Cygni with Fermi-LAT. Monthly Notices of the Royal Astronomical Society, 506(4), 6029-6038. https://doi.org/10.1093/mnras/stab2097
Journal Article Type | Article |
---|---|
Acceptance Date | Jul 18, 2021 |
Online Publication Date | Jul 22, 2021 |
Publication Date | 2021-10 |
Deposit Date | Oct 29, 2021 |
Publicly Available Date | Nov 10, 2021 |
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 | 506 |
Issue | 4 |
Pages | 6029-6038 |
DOI | https://doi.org/10.1093/mnras/stab2097 |
Related Public URLs | https://arxiv.org/abs/2107.09395 |
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Copyright Statement
This article has been accepted for publication in Monthly notices of the Royal Astronomical Society. ©: 2021 The Author(s). Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.
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