Flows and Shocks in Active Galaxies and Their Nuclei

Details Flows and Shocks in Active Galaxies and Their Nuclei Flows and Shocks in Active Galaxies and Their Nuclei

Nov 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995ap%26ss.233..199d&link_type=abstract

Astrophysics and Space Science, Volume 233, Issue 1-2, pp. 199-214

Astronomy and Astrophysics

Astrophysics

Shock Waves, Ism: Kinematics And Dynamics, Galaxies: Active

Scientific paper

Observations of active galactic nuclei imply that shocks must be an essential and important part of their structure. We outline the basic observations, and discuss those features which must be addressed by any physical model of active nuclei. These features, in particular the observed spectrum of strong emission and absorption lines, lead naturally to the conclusion that shocks are present. The velocity widths of these lines, which range from hundreds to many thousands of kilometres per second, are most readily explained by models in which shocks play an important role in the generation of cool gas. The extreme parameters of the shocks in and around active nuclei provide a unique application for the physics discussed in this meeting.

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