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Precise Measurement of the Spin Parameter of the Stellar-Mass Black Hole M33 X-7
Jifeng Liu, Jeffery E. McClintock, Ramesh Narayan +2
In prior work, {\it Chandra} and Gemini-North observations of the eclipsing X-ray binary M33 X-7 have yielded measurements of the mass of its black hole primary and the system's or…
Angular Momentum Transport in Accretion Disks and its Implications for Spin Estimates in Black Hole Binaries
Chris Done, Shane W. Davis
The accretion flow in the disk dominated state of black hole binaries has peak temperature and luminosity which vary together in such a way as to indicate an approximately constant…
The UV Continuum of Quasars: Models and SDSS Spectral Slopes
Shane W. Davis, Jong-Hak Woo, Omer M. Blaes
We measure long (2200-4000 ang) and short (1450-2200 ang) wavelength spectral slopes α(F_νproportional to ν^α) for quasar spectra from the Sloan Digital Sky Survey. The long and sh…
Turbulent Comptonization in Relativistic Accretion Disks
Aristotle Socrates, Shane W. Davis, Omer Blaes
Turbulent Comptonization, a potentially important damping and radiation mechanism in relativistic accretion flows, is discussed. Particular emphasis is placed on the physical basis…
The Eddington Limit in Cosmic Rays: An Explanation for the Observed Faintness of Starbursting Galaxies
Aristotle Socrates, Shane W. Davis, Enrico Ramirez-Ruiz
We show that the luminosity of a star forming galaxy is capped by the production and subsequent expulsion of cosmic rays from its interstellar medium. By defining an Eddington lumi…
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…