期刊
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷 401, 期 3, 页码 1620-1627出版社
WILEY-BLACKWELL PUBLISHING, INC
DOI: 10.1111/j.1365-2966.2009.15787.x
关键词
accretion, accretion discs; MHD; Galaxy: centre
资金
- Los Alamos National Laboratory IGPP [NSF-AST-0406882]
- Direct For Mathematical & Physical Scien
- Division Of Astronomical Sciences [0909167] Funding Source: National Science Foundation
We present results of simulations of the spectrum of the accretion flow on to the supermassive black hole in our Galactic Centre, Sagittarius A*, generated with a coupling of Monte Carlo ( MC) radiation and general relativistic magnetohydrodynamic codes. In our modelling, we use the two-dimensional HARM GRMHD code to first model the physical parameters of the disc, then feed its results into our two-dimensional MC photon transport code. We will discuss results obtained which fit radio, infrared and Chandra-obtained flaring or quiescent X-ray data points, as well as the validity of the amount of scaling of input parameters ( density, temperature and magnetic field) required to fit these points. HARM output will be used to suggest whether the scaling is within reasonable limits.
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