Study of orbital and superorbital variability of LSI +61 303 with X-ray data

LSI +61 303 is one of the few X-ray binaries with a Be star companion from which radio, X-rays and high-energy gamma-ray (GeV and TeV) emission have been observed. The nature of the high energy activity of the system is not yet fully understood, but it is widely believed that it is generated due to...

Full description

Saved in:
Bibliographic Details
Published in:arXiv.org 2017-05
Main Authors: Chernyakova, M, Babyk, Iu, Malyshev, D, Vovk, Ie, Tsygankov, S, Takahashi, H, Fukazawa, Ya
Format: Article
Language:English
Subjects:
Binary stars
Companion stars
Domains
Gamma rays
Observatories
Photons
Relativism
Relativistic effects
Stellar winds
X ray binaries
X ray stars
X-rays
XMM (spacecraft)
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:LSI +61 303 is one of the few X-ray binaries with a Be star companion from which radio, X-rays and high-energy gamma-ray (GeV and TeV) emission have been observed. The nature of the high energy activity of the system is not yet fully understood, but it is widely believed that it is generated due to the interaction of the relativistic electrons leaving the compact object with the photons and non-relativistic wind of the Be star. The superorbital variability of the system has been observed in the radio, optical and X-ray domains and could be due to the cyclic change of the Be star disk size. In this paper we systematically review all publicly available data from Suzaku, XMM-Newton, Chandra and Swift observatories in order to measure the absorption profile of the circumstellar Be disk as a function of orbital and superorbital phases. We also discuss short-term variability of the system, found during the analysis and its implications for the understanding of the physical processes in this system.
ISSN:2331-8422
DOI:10.48550/arxiv.1705.09343