Which Processes are Responsible for Triggering Active Galactic Nuclei?

Details Which Processes are Responsible for Triggering Active Galactic Nuclei? Which Processes are Responsible for Triggering Active Galactic Nuclei?

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21915403d&link_type=abstract

American Astronomical Society, AAS Meeting #219, #154.03

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Scientific paper

In order to understand the co-evolution of supermassive black holes and their host galaxies, it is important to understand what mechanisms trigger episodes of active galactic nuclei (AGN). Some researchers argue that AGN activity is triggered by major mergers, while other researchers suggest that secular processes, such as stellar bars or minor mergers, are responsible for fueling AGN. Here, we investigate the importance of secular processes and major mergers for the AGN population at different redshift and luminosity ranges. An evolving major merger rate and theoretical AGN light curve are used to model the hard X-ray luminosity function. By determining which mechanisms are triggering AGN at various redshifts, the processes which drive galaxy evolution at different epochs will be illuminated.

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