KERRBB: An XSPEC Subroutine for Computing the Blackbody Spectrum of a Thin Accretion Disk around a Kerr Black HoleKERRBB is a multi-temperature blackbody model for a thin, steady state, general relativistic accretion disk around a Kerr black hole. The self-irradiation of the disk is considered, and the torque at the inner boundary of the disk is allowed to be nonzero. The effect of Compton scattering in the disk atmosphere is included. This model is intended as an extension to GRAD, which assumes that the black hole is nonrotating.
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