3D Simulation of the Gas Dynamics in the Central Parsec of the Galaxy

Details 3D Simulation of the Gas Dynamics in the Central Parsec of the Galaxy 3D Simulation of the Gas Dynamics in the Central Parsec of the Galaxy

1998-11-27

arxiv.org/abs/astro-ph/9811428v1

ASP Conf.Ser. 186 (1999) 214

Astronomy and Astrophysics

Astrophysics

10 pages, 3 figures, GC98 conference proceedings, uses paspconf.sty

Scientific paper

It is thought that many characteristics of the gaseous features within the central parsec of our Galaxy, are associated with the accretion of ambient plasma by a central concentration of mass. Using a 3D hydrodynamical code, we have been simulating this process in order to realistically model the gaseous flows in the center of our Galaxy. In the most recent simulation, we have taken into account the multi-point-like distribution of stellar wind sources, as well as the magnetic heating and radiative cooling of these stellar winds. As expected, we find that the structure of the flow is significantly different from that due to a uniform medium. We also investigate the possibility that Sgr A* is due to a distributed mass concentration instead of the canonical point mass of a black hole. We discuss the physical state of the accreting gas and how our results suggest that Sgr A* is unlikely to be associated with a ``dark cluster''.

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