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Accretion and Ejection--The GR/MHD View
J. H. Krolik, J. F. Hawley
The inward flow of matter through accretion disks is driven by MHD turbulence. Global general relativistic MHD simulations shed quantitative light on this process, revealing a numb…
An Exact, Three-Dimensional, Time-Dependent Wave Solution in Local Keplerian Flow
Steven A. Balbus, John F. Hawley
We present an exact three-dimensional wave solution to the shearing sheet equations of motion. The existence of this solution argues against transient amplification as a route to t…
Light Curves from an MHD Simulation of a Black Hole Accretion Disk
Jeremy D. Schnittman, Julian H. Krolik, John F. Hawley
We use a relativistic ray-tracing code to calculate the light curves observed from a global general relativistic magneto-hydrodynamic simulation of an accretion flow onto a Schwarz…
Estimating the Radiative Efficiency of Magnetized Accretion Disks Around Black Holes
Kris Beckwith, John F. Hawley, Julian H. Krolik
Simulations of black hole accretion have shown that magnetic stresses are present near and inside the innermost stable circular orbit (ISCO). This finding suggests that such flows…