A relativistic funnel scattering model with variable bulk velocity reproduces the ~23% hard-state and ~12% soft-state polarization in Cygnus X-3 at low inclination using half-opening angles of 13-16 degrees.
A model-independent analysis of the variability of GRS 1915+105
4 Pith papers cite this work. Polarity classification is still indexing.
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abstract
We analyzed 163 observations of the microquasar GRS 1915+105 made with the Rossi X-ray Timing Explorer (RXTE) in the period 1996-1997. For each observation, we produced light curves and color-color diagrams. We classified the observations in 12 separate classes, based on their count rate and color characteristics. From the analysis of these classes, we reduced the variability of the source to transitions between three basic states: a hard state corresponding to the non-observability of the innermost parts of the accretion disk, and two softer states with a fully observable disk. These two soft states represent different temperatures of the accretion disk, related to different local values of the accretion rate. The transitions between these states can be extremely fast. The source moves between these three states following certain patterns and avoiding others, giving rise to a relatively large but limited number of variability classes. These results are the first step towards a linking of the properties of this exceptional source with standard black-hole systems and with accretion disk models.
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MAD accretion flows show higher Higuchi fractal dimensions, lower Hurst indices, and flatter spectral slopes than SANE flows in simulations, with observational data from GRS 1915+105 segregating into matching MAD-like and SANE-like clusters.
Mass-scaled DRW damping timescales in AGNs follow a linear relation with black hole mass (slope 0.35-0.50) for both jetted and non-jetted sources, supporting universal accretion physics.
Winds in shocked magnetized viscous accretion flows around rotating black holes reduce luminosity, modify shock radius, compression, and strength, and impose a critical wind parameter p^crit above which steady shocks cease to exist.
citing papers explorer
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Relativistic Scattering in the Funnel of Cygnus X-3
A relativistic funnel scattering model with variable bulk velocity reproduces the ~23% hard-state and ~12% soft-state polarization in Cygnus X-3 at low inclination using half-opening angles of 13-16 degrees.
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Possible fractal nature of accretion flows in MAD and SANE simulations: Implications to GRS 1915+105
MAD accretion flows show higher Higuchi fractal dimensions, lower Hurst indices, and flatter spectral slopes than SANE flows in simulations, with observational data from GRS 1915+105 segregating into matching MAD-like and SANE-like clusters.
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A universal relationship between the variability timescale and black hole mass in black hole jetted and non-jetted accreting systems
Mass-scaled DRW damping timescales in AGNs follow a linear relation with black hole mass (slope 0.35-0.50) for both jetted and non-jetted sources, supporting universal accretion physics.
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Influence of winds on shocked magnetized viscous accretion flows around rotating black holes
Winds in shocked magnetized viscous accretion flows around rotating black holes reduce luminosity, modify shock radius, compression, and strength, and impose a critical wind parameter p^crit above which steady shocks cease to exist.