Spectra from three-dimensional magneto-hydrodynamical accretion flows

Details Spectra from three-dimensional magneto-hydrodynamical accretion flows Spectra from three-dimensional magneto-hydrodynamical accretion flows

Nov 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004iaus..222..463o&link_type=abstract

The Interplay among Black Holes, Stars and ISM in Galactic Nuclei, Proceedings of IAU Symposium, No. 222. Edited by T. Storchi-B

Physics

Scientific paper

Global three-dimensional (3D) magneto-hydrodynamical (MHD) simulations of accretion flow have been extensively performed recently. We calculate the emergent spectra from 3D MHD flows by the Monte Carlo radiative transfer simulations, and examine to what extent simulated MHD flows can account for the observed spectrum of Sagittarius A* (Sgr A*). It is found that the emergent spectrum from the inner part of the MHD flow (r<10rs) is consistent with the observations in the X-ray flaring state of Sgr A*, where rs is the Schwarzschild radius. However, the MHD flow can not reproduce the spectrum in the quiescent state.

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