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On the nature of the X-ray outbursts in Be/X-ray binaries

Published online by Cambridge University Press:  30 December 2019

Jingzhi Yan ,
Wei Liu ,
Peng Zhang  and
Qingzhong Liu
Jingzhi Yan
Affiliation:
Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210034, China email: jzyan@pmo.ac.cn
Wei Liu
Affiliation:
Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210034, China email: jzyan@pmo.ac.cn
Peng Zhang
Affiliation:
Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210034, China email: jzyan@pmo.ac.cn
Qingzhong Liu
Affiliation:
Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210034, China email: jzyan@pmo.ac.cn
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Abstract

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Be/X-ray binaries are a major subclass of high mass X-ray binaries. Two different X-ray outbursts are displayed in the X-ray light curves of such systems. It is generally believed that the X-ray outbursts are connected with the neutron star periastron passage of the circumstellar disk around the Be star. The optical emission of the Be star should be very important to understand the X-ray emission of the compact object. We have monitored several Be/X-ray binaries photometrically and spectroscopically in the optical band. The relationship between the optical emission and X-ray activity is described, which is very useful to explain the X-ray outbursts in Be/X-ray binaries.

Keywords

X-rays: binariesstars: emission-lineBeBe/X-ray binaries
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 14 , Symposium S346: High-mass X-ray Binaries: Illuminating the Passage from Massive Binaries to Merging Compact Objects , August 2018 , pp. 146 - 148
Copyright
© International Astronomical Union 2019 

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