The Effect of a Central Supermassive black hole on the Gas Fuelling

Details The Effect of a Central Supermassive black hole on the Gas Fuelling The Effect of a Central Supermassive black hole on the Gas Fuelling

1997-11-08

arxiv.org/abs/astro-ph/9711075v1

Astronomy and Astrophysics

Astrophysics

7 pages, 14 Postscript figures, LaTeX 2.09, requires mn.sty, to be published in MNRAS

Scientific paper

10.1046/j.1365-8711.1998.01324.x

When a supermassive black hole exists in the centre of a galaxy, an additional inner Lindblad resonance (ILR) exists inside the usual ILRs. We study gas dynamics in a weakly barred potential with a central supermassive black hole by using 2D numerical simulations, and we investigate the effect of the additional ILR on fuelling gas into nuclear starburst regions or AGNs. Our numerical results show that strong trailing spiral shocks are formed at the resonance region, and the gas in the shock region is rapidly fuelled into a central region and make a nuclear gas ring. As a result, a large amount of gas is concentrated in the nuclear region beyond the ILR in a dynamical time scale.

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