Colloquium on 7 August 2014
On the the relationship between circumstellar disc size and X-ray outbursts in Be X-ray binaries

Details

Title: On the the relationship between circumstellar disc size and X-ray outbursts in Be X-ray binaries
Speaker: Itumeleng Monageng
Date: Thursday, 7 August 2014
Time: 11:40 - 12:00
Venue: SAAO Auditorium

Abstract

Long-term spectroscopic monitoring of Galactic Be Xray binaries (BeXBs) is performed using the Liverpool Telescope and the Southern African Large Telescope on northern and southern objects, respectively. The H-alpha emission line can be used as a trace of the state of the circumstellar disc around the Be star. Analysis of different properties of the H-alpha emission line will be presented to study circumstellar discsize variations and their influence on mass accretion resulting in X-ray activity.

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