QPO Frequency - Color Radius Connection in GRS 1915+105: a Possible Turnover supporting AEI predictions

Abstract

It is widely believed that the low frequency quasi-periodic X-ray oscillations observed in microquasars are correlated to, but do not originate at, the physical radius of the inner edge of the accretion disk. Models relating the QPO frequency and color radius are hindered by observations showing contradicting trend correlations between the microquasars GRO 1655-40, XTE J1550-564 and GRS 1915+105. The first shows a negative correlation and the latter two a positive one. By taking into account relativistic rotation in the accretion disk, the Accretion-Ejection Instability (AEI) model predicts a turnover in the frequency-radius relationship, and has been successfully compared with observations of GRO J1655-40 and GRS 1915+105. We present further evidence supporting the AEI model prediction by using observations of the microquasar GRS 1915+105. By combining a data set including $\theta$-, $\beta$- and $\alpha$-class X-ray light curves, we observe positive, negative and null correlations in the frequency-radius relationship. This is the first time a single source has shown a possible inversion in the QPO frequency-color radius curve predicted by the AEI model.

References in corpus (7)

• Accretion-Ejection Instability, MHD Rossby Wave Instability, diskoseismology, and the high-frequency QPO of microquasars
• Two Years of INTEGRAL monitoring of GRS 1915+105 Part 2: X-Ray Spectro-Temporal Analysis
• High-frequency Quasi-Periodic Oscillations from GRS 1915+105 in its C state
• Of NBOs and kHz QPOs: a low-frequency modulation in resonant oscillations of relativistic accretion disks
• Connection between accretion disk and superluminal radio jets and the role of radio plateau state in GRS 1915+105
• Observations of Rapid Disk-Jet Interaction in the Microquasar GRS 1915+105
• Does Low Frequency X-ray QPO Behavior in GRS 1915+105 Influence Subsequent X-ray and Infrared Evolution?

Cited by in corpus (9)

• A possible interpretation for the apparent differences in LFQPO types in microquasars
• Identification of QPO frequency of GRS 1915+105 as the relativistic dynamic frequency of a truncated accretion disk
• Fast transition of type-B QPO in the black hole transient XTE J1817-330
• Timing analysis of the black hole candidate EXO 1846-031 with Insight-HXMT monitoring
• A microquasar classification from a disk instability perspective
• The puzzling harmonic behavior of the Cathedral QPO in XTE J1859+226
• Comptonization efficiencies of the variability classes of GRS 1915+105
• Impact of inclination on quasi-periodic oscillations from spiral structures
• Can we disentangle between the emission of an accretion disc around a single black hole and a circumbinary disc ?