The Inner 2 pc of Sagittarius A*: Simulations of the Circumnuclear Disk and Multiphase Gas Accretion in the Galactic Center

Abstract

We present hydrodynamic simulations of the inner few parsecs of the Milky Way's Galactic Center that, for the first time, combine a realistic treatment of stellar winds and the circumnuclear disk as they interact with the gravitational potential of the nuclear star cluster and Sagittarius~A*. We observe a complex interaction of the stellar winds with the inner edge of the circumnuclear disk, which leads to the growth of instabilities, induced accretion of cool gas from the inner edge of the disk, and the eventual formation of a small accretion disk of $\sim 10^4-10^5$ K within $r\sim 0.1$ pc.

26 pages, 16 figures, (Submitted to ApJ)

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Cited by in corpus (8)

• The formation and stability of a cold disc made out of stellar winds in the Galactic Centre
• Mass flows in the Galactic Center by supernovae of the circumnuclear disk
• Compact stellar systems hosting an intermediate mass black hole: magnetohydrodynamic study of inflow-outflow dynamics
• The Discovery of an Active Wind from the Milky Way's Black Hole
• Tidal phenomena in the Galactic Center: The curious case of X7
• High Energy Emission from the Galactic Center
• The Complex Magnetic Field of the Extreme Galactic Center: PRIMA Science Potential
• Supergiant GCIRS 22 in the Milky Way Nuclear Star Cluster: Revised alpha abundances