Abstracts, Galactic Center Workshop '98
GCNEWS
A Newsletter for Galactic Center Research
This Volume was edited by Angela Cotera & Heino Falcke
email: gcnews@aoc.nrao.edu

ABSTRACT

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3D Simulations of the Gas Dynamics in the Central Region
Coker, R.F.1; Melia, F.1,2
1 Physics Deptartment, University of Arizona, Tucson, AZ 85721; 2 Steward Observatory, University of Arizona, Tucson, AZ 85721;
ABSTRACT:
It is thought that many characteristics of the central parsec of our
Galaxy, from Sgr A* to the ``mini-cavity'', are associated with the
accretion of ambient gas by a central concentration of mass.
Using a 3D hydrodynamical code, we have been simulating this
accretion process, in order to realistically model the gaseous flows
in the center of our Galaxy. In the most recent simulations, 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''.
LINKS: Program, Author, rfc@physics.arizona.edu
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