Monte Carlo simulations of the broad-band spectra of Sagittarius A* through the use of general relativistic magnetohydrodynamics

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.