Speaker
Description
"GRS 1915+105 is one of the brightest X-ray objects over 26 years since it was first detected by GRANAT/WATCH in 1992. Its variable behavior was classified to 12 different variability classes based on the analysis of the light curve and color-color diagram (Belloni et al. 2000). The variability is observed on different timescales from a few seconds to an hour. Later work suggests there are two more classes (Klein-Wolt et al. 2002; Hannikanien et al. 2005). However, transitions among variability classes of GRS 1915+105 have not been well studied yet.
In this work, we classified 9 years’ activity of GRS 1915+105 into three branches in the hardness-intensity diagram drawn with the MAXI/GSC and Swift/BAT data. In the X-ray light curve, we identified the time periods that constitute each of these branches. We discuss the X-ray emission components present in these branches and transitions between them."
