Likely detection of magnetic field related LFQPO in the soft X-ray re-brightening of GRS~1915+105
arXiv:2403.09341 · doi:10.1051/0004-6361/202348512
Abstract
Utilizing NICER observations, we present an analysis of the soft X-ray re-brightening event of GRS 1915+105 observed in 2021. During this event, we observed the emergence of a stable, long-lasting low-frequency quasi-periodic oscillation (LFQPO) with frequencies ranging from 0.17 to 0.21 Hz. Through a careful spectral analysis, we demonstrate that a low-temperature Compton-thick gas model well characterizes the emitted radiation. By examining the spectrum and identifying numerous absorption lines, we discerned a transition in the wind properties. This transition was marked by a shift from a state characterized by low speed, high column density, and high ionization degree to one featuring still low speed but low column density and ionization degree. Intriguingly, the presence or absence of the QPO signal is perfectly correlated with these distinct wind characteristics. The low-speed wind observed could be indicative of a 'failed wind', while the observed shift implies a transition from a magnetically to a thermally driven wind. Notably, this QPO signal exclusively manifested itself during the magnetically driven phase, suggesting the possibility of a novel perturbation associated with magnetic effects.
References in corpus (22)
- A review of quasi-periodic oscillations from black hole X-ray binaries: observation and theory
- A Parallax Distance to the Microquasar GRS 1915+105 and a Revised Estimate of its Black Hole Mass
- On why the Iron K-shell absorption in AGN is not a signature of the local Warm/Hot Intergalactic Medium
- Discovery of oscillations above 200 keV in a black hole X-ray binary with Insight-HXMT
- No Time for Dead Time: Timing analysis of bright black hole binaries with NuSTAR
- A Systematic Analysis of the Phase Lags Associated with the Type-C Quasi-periodic Oscillation in GRS 1915+105
- The obscured X-ray binaries V404 Cyg, Cyg X-3, V4641 Sgr, and GRS 1915+105
- An Obscured, Seyfert-2-like State of the Stellar-mass Black Hole GRS 1915+105 Caused by Failed Disk Winds
- Coronae and Winds from Irradiated Disks in X-ray binaries
- Observations of a radio-bright, X-ray obscured GRS 1915+105
- Variable iron-line emission near the black hole of Markarian 766
- A NICER View of a Highly-Absorbed Flare in GRS 1915+105
- Disk-Wind Connection During the Heartbeats of GRS 1915+105
- The impact of thermal winds on the outburst lightcurves of black hole X-ray binaries
- The Novel Obscured State of Stellar-mass Black Hole GRS 1915+105
- Unraveling the foretime of GRS 1915+105 using AstroSat observations: Wide-band spectral and temporal characteristics
- ALMA/NICER observations of GRS 1915+105 indicate a return to a hard state
- Insight-HXMT Study of the Inner Accretion Disk in the Black Hole Candidate EXO 1846--031
- Insight-HXMT observations of a possible fast transition from jet to wind dominated state during a huge flare of GRS~1915+105
- A variable magnetic disc wind in the black hole X-ray binary GRS 1915+105?
- The disk wind in GRS 1915+105 as seen by Insight-HXMT
- Modeling Accretion Disk X-ray Continuum of Black Hole Candidates