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Nuclear spirals: Gas in asymmetric galactic potential with a massive black hole

Maciejewski, W (2004) Nuclear spirals: Gas in asymmetric galactic potential with a massive black hole. In: Proceedings of the International Astronomical Union (222). pp. 431-434. (222nd Symposium of the International-Astronomical-Union, 01 March 2004 - 05 March 2004, Gramado, BRAZIL).

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Abstract

Nuclear spirals can provide a wealth of information about the nuclear potential in disc galaxies. They form naturally as a gas response to non-axisymmetry in the gravitational potential, even if the degree of this asymmetry is very small. Linear wave theory well describes weak nuclear spirals, but stronger asymmetries in the potential induce waves beyond the linear regime, which appear as spiral shocks. If a central massive black hole (MBH) is present, spiral shocks can extend all the way to its immediate vicinity, and generate gas inflow up to 0.03 M$_{\odot}\,$ yr−1. This coincides with the accretion rates needed to power local Active Galactic Nuclei.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Science & Technology; Physical Sciences; Astronomy & Astrophysics; DENSITY WAVES; GALAXIES; BARS; LINDBLAD; DUST
Subjects: Q Science > QB Astronomy
Q Science > QC Physics
Divisions: Public Health Institute
Publisher: Cambridge University Press (CUP)
Related URLs:
Date Deposited: 06 Dec 2017 10:22
Last Modified: 06 Dec 2017 10:22
DOI or Identification number: 10.1017/S1743921304002807
Editors: StorchiBergmann, T and Ho, LC and Schmitt, HR
URI: http://researchonline.ljmu.ac.uk/id/eprint/7672

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