Evidence for local mass accretion rate variations in the disc of GRS 1915+105

Abstract

We have analysed 16 observations of class beta of GRS 1915+105 performed with the Rossi X-ray Timing Explorer. We show the time-resolved evolution (every 16 seconds) of the X-ray spectral parameters during these observations. The three model independent states (A, B, C) identified in the color-color diagrams are described here in terms of the more physical (and model dependent) quantities of the disc and power law components. As in the color analysis, we observe specific and time-asymmetric transitions between states. Within a single observation, we identified a loop-like cycle of the power law spectral index that starts and ends with the ending of state C. There is evidence of local mass accretion rate variations and mass loss during the long instability intervals (long state C). This is consistent with simultaneous radio and X-ray observations that show a one-to-one relation between the long state C and the radio flares, that occur shortly after it: a loss of disc mass is followed by an ejection of matter in the jet.

accepted for publication in A&A

References in corpus (1)

• On the Misalignment of Jets in Microquasars

Cited by in corpus (16)

• GRS 1915+105 and the Disc-Jet Coupling in Accreting Black Hole Systems
• The Physics of the 'Heartbeat' State of GRS 1915+105
• Suzaku Observation of GRS 1915+105: Evolution of Accretion Disc Structure during Limit-Cycle Oscillation
• High-frequency Quasi-Periodic Oscillations from GRS 1915+105 in its C state
• Steady jets from radiatively efficient hard states in GRS 1915+105
• Time delays between the soft and hard X-ray bands in GRS 1915+105
• Accretion Disc Wind Variability in the States of the Microquasar GRS 1915+105
• Characterizing the radio--X-ray connection in GRS 1915+105
• Connection between accretion disk and superluminal radio jets and the role of radio plateau state in GRS 1915+105
• Non-linear oscillator models for the X-ray bursting of the microquasar GRS 1915+105
• Observations of Rapid Disk-Jet Interaction in the Microquasar GRS 1915+105
• Comptonization efficiencies of the variability classes of GRS 1915+105
• Time-resolved spectroscopy on the heartbeat state of GRS 1915+105 using AstroSat
• Correlating nonlinear properties with spectral states of RXTE data: Possible observational evidences for four different accretion modes around compact objects
• Transient jet ejections associated with limit-cycle behaviors in the very high state of black hole binaries
• GRMHD Simulations of Magnetized Accretion Disk/Jet: Variabilities of Black Holes and Spectral Energy Distributions in Magnetic States