X-ray Spectra from MHD Simulations of Accreting Black Holes

Details X-ray Spectra from MHD Simulations of Accreting Black Holes X-ray Spectra from MHD Simulations of Accreting Black Holes

May 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21810707s&link_type=abstract

American Astronomical Society, AAS Meeting #218, #107.07; Bulletin of the American Astronomical Society, Vol. 43, 2011

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We present new global calculations of X-ray spectra from fully relativistic magneto-hydrodynamic (MHD) simulations of black hole (BH) accretion disks. With a self-consistent radiative transfer code including Compton scattering and returning radiation, we can reproduce the predominant spectral features seen in decades of X-ray observations of stellar-mass BHs: a broad thermal peak around 1 keV, power-law continuum up to >100 keV, and a relativistically broadened iron fluorescent line. By varying the mass accretion rate, different spectral states naturally emerge: thermal-dominant, steep power-law, and low/hard. In addition to the spectral features, we briefly discuss applications to X-ray timing and polarization.

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