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Gamma-rays from SS433: evidence for periodicity

Rasul, Kajwan; Chadwick, Paula M; Graham, Jamie A; Brown, Anthony M

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Authors

Kajwan Rasul

Jamie A Graham

Anthony M Brown



Abstract

In this paper we present our study of the gamma-ray emission from the microquasar SS433. Integrating over 9 yr of Fermi-LAT Pass 8 data, we detect SS433 with a significance of ∼13σ in the 200 to 500 MeV photon energy range, with evidence for an extension in the direction of the w1 X-ray ‘hotspot’. A temporal analysis reveals evidence for modulation of SS433’s gamma-ray emission with the precession period of its relativistic jet. This suggests that at least some of SS433’s gamma-ray emission originates close to the object rather than from the jet termination regions.

Citation

Rasul, K., Chadwick, P. M., Graham, J. A., & Brown, A. M. (2019). Gamma-rays from SS433: evidence for periodicity. Monthly Notices of the Royal Astronomical Society, 485(2), 2970-2975. https://doi.org/10.1093/mnras/stz559

Journal Article Type Article
Acceptance Date Feb 21, 2019
Online Publication Date Feb 28, 2019
Publication Date May 11, 2019
Deposit Date Mar 19, 2019
Publicly Available Date Mar 28, 2024
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 485
Issue 2
Pages 2970-2975
DOI https://doi.org/10.1093/mnras/stz559
Related Public URLs https://arxiv.org/abs/1903.00299

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Copyright Statement
© 2019 The Author(s). Published by Oxford University Press on behalf of the Royal Astronomical Society.




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