586 citations · 1.6k across the 7 of their papers we have counts for
7 papers
Simulations of Magnetized Disks Around Black Holes: Effects of Black Hole Spin, Disk Thickness, and Magnetic Field Geometry
Robert F. Penna, Jonathan C. McKinney, Ramesh Narayan +3
The standard general relativistic model of a razor-thin accretion disk around a black hole, developed by Novikov & Thorne (NT) in 1973, assumes the shear stress vanishes at the rad…
Three-Dimensional Simulations of Magnetized Thin Accretion Disks around Black Holes: Stress in the Plunging Region
Rebecca Shafee, Jonathan C. McKinney, Ramesh Narayan +3
We describe three-dimensional general relativistic magnetohydrodynamic simulations of a geometrically thin accretion disk around a non-spinning black hole. The disk has a thickness…
Estimating the Spins of Stellar-Mass Black Holes by Fitting Their Continuum Spectra
Ramesh Narayan, Jeffrey E. McClintock, Rebecca Shafee
We have used the Novikov-Thorne thin disk model to fit the continuum X-ray spectra of three transient black hole X-ray binaries in the thermal state. From the fits we estimate the…
Estimating the Spins of Stellar-Mass Black Holes
Jeffrey E. McClintock, Ramesh Narayan, Rebecca Shafee
We describe a program that we have embarked on to estimate the spins of stellar-mass black holes in X-ray binaries. We fit the continuum X-ray spectrum of the radiation from the ac…
Viscous Torque and Dissipation in the Inner Region of a Thin Accretion Disk: Implications for Measuring Black Hole Spin
Rebecca Shafee, Ramesh Narayan, Jeffrey E. McClintock
We consider a simple Newtonian model of a steady accretion disk around a black hole. The model is based on height-integrated hydrodynamic equations, alpha-viscosity, and a pseudo-N…
The Spin of the Near-Extreme Kerr Black Hole GRS 1915+105
Jeffrey E. McClintock, Rebecca Shafee, Ramesh Narayan +3
Based on a spectral analysis of the X-ray continuum that employs a fully relativistic accretion-disk model, we conclude that the compact primary of the binary X-ray source GRS 1915…