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Why haven't the observed high-frequency QPOs been produced by (MHD) computer simulations of black hole accretion disks?
Robert V. Wagoner, Celia R. Tandon
We compare some predictions of Wagoner & Tandon (2021) with the results of the hydrodynamic and magnetohydrodynamic (MHD) simulations of Reynolds & Miller (2009). It appears that t…
Understanding Gamma-ray Burst Jet Structures from Afterglow Light Curves
Celia R. Tandon, Nicole M. Lloyd-Ronning
Gamma-ray bursts (GRBs), associated with the collapse of massive stars or the collisions of compact objects, are the most luminous events in our universe. However, there is still m…
Evolution of a Mode of Oscillation Within Turbulent Accretion Disks
Robert V. Wagoner, Celia R. Tandon
We investigate the effects of subsonic turbulence on a normal mode of oscillation [a possible origin of the high-frequency quasi-periodic oscillations (HFQPOs) within some black ho…
Confrontation of Observation and Theory: High Frequency QPOs in X-ray Binaries, Tidal Disruption Events, and Active Galactic Nuclei
Krista Lynne Smith, Celia R. Tandon, Robert V. Wagoner
We compile observations of high-frequency quasi-periodic oscillations (QPOs) around black holes, both stellar and supermassive, and compare their positions in the parameter space o…