Large Scale Gravitational Instability and Galactic Viscosity (Poster paper)

Linden, Susanne von; Lesch, Harald und Combes, Françoise (1994): Large Scale Gravitational Instability and Galactic Viscosity (Poster paper). In: Shlosman, Isaac (Hrsg.): Mass-Transfer Induced Activity in Galaxies. Cambridge University Press. S. 189-190

Abstract

The large-scale dynamics of the interstellar medium in spiral galaxies is significantly determined by molecular cloud physics. Inelastic cloud-cloud collisions, coupled with gravitational instabilities generated by the gas cooling, give rise to a net flux of angular momentum which is equivalent to a (gravitational) “viscosity”. By using N–body model calculations of a self-gravitating disk we study the efficiency of collisions coupled with gravitational waves, and its importance for large-scale mass accretion in disk galaxies.

• Dokumententyp: Buchbeitrag
• Fakultät: Physik
• Themengebiete: 500 Naturwissenschaften und Mathematik > 520 Astronomie ; 500 Naturwissenschaften und Mathematik > 530 Physik
• Sprache: Englisch