Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011sf2a.conf..563d&link_type=abstract
SF2A-2011: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics Eds.: G. Alecian, K. Belkacem,
Astronomy and Astrophysics
Astrophysics
1
Sgr A*, Mhd, Radiation Mechanisms: General, Plasmas, Radiative Transfer, Diffusion, Acceleration Of Particles.
Scientific paper
Cosmos++ (Anninos et al., 2005) is one of the first fully relativistic magneto-hydro-dynamical (MHD) codes that can self-consistently account for radiative cooling, in the optically thin regime. As the code combines a total energy conservation formulation with a radiative cooling function, we have now the possibility to produce spectra energy density from these simulations and compare them to data. In this paper, we present preliminary results of spectra calculated using the same cooling functions from 2D Cosmos++ simulations of the accretion flow around Sgr A*. The simulation parameters were designed to roughly reproduce Sgr A*'s behavior at very low ( 10^{-8}-10^{-7} M_{&sun;}/yr) accretion rate, but only via spectra can we test that this has been achieved.
Dexter Jason
Dibi Salomé
Drappeau Sary
Fragile Chris P.
Markoff Sera
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