Evidence of Class Transitions in GRS 1915+105 from IXAE Data

Abstract

GRS 1915+105 shows at least twelve distinct classes of light curves. By analysing the data obtained from Indian X-ray Astronomy Experiment (IXAE) instrument aboard IRS-P3 satellite, we show that in at least two days, transitions between one class to another were observed. In these days the so-called $\kappa$ class went to $\rho$ class and $\chi$ class went to $\rho$ class. In the frequency-time plane such transitions exhibited change in quasi-periodic oscillation (QPO) frequency. We could detect that low-frequency QPOs can occur in anticipation of a class transition several hundred minutes before the actual transition

14 pages, 3 figures, Astrophysical Journal

References in corpus (3)

• Correlation among QPO frequencies and Quiescence-state Duration in Black Hole Candidate GRS 1915+105
• Different types of X-ray bursts from GRS 1915+105 and their origin
• Fast Transition between High-soft and Low-soft States in GRS 1915+105: Evidence for a Critically Viscous Accretion Flow

Cited by in corpus (6)

• The complex behaviour of the microquasar GRS 1915+105 in the rho class observed with BeppoSAX. I: Timing analysis
• Class Transitions and Two Component Accretion Flow in GRS 1915+105
• Comptonization efficiencies of the variability classes of GRS 1915+105
• Evolution of Accretion Disc Geometry of GRS~1915+105 during its $\chi$ state as revealed by TCAF solution
• Evidence of variation of the accretion flow geometry in GRS 1915+105 from IXAE and RXTE data
• Spectral signature of mass outflow in Two Component Advective Flow Paradigm