Can star collisions explain the AGN variability?

Details Can star collisions explain the AGN variability? Can star collisions explain the AGN variability?

Jun 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000a%26a...358...57t&link_type=abstract

Astronomy and Astrophysics, v.358, p.57-64 (2000)

Astronomy and Astrophysics

Astrophysics

19

Galaxies: Active, Galaxies: Nuclei, Galaxies: Quasars: General, Ultraviolet: Galaxies

Scientific paper

Star collisions may easily occur in a cluster of stars orbiting around a massive black hole. Such collisions can transform part of the star kinetic energy in observable radiating energy. In this paper we derive the star collision rate and the resulting highly variable luminosity for the case of a cluster containing stars of different masses. The variability of the derived light curves is computed for different sets of parameters and compared to the available data (Paltani & Courvoisier \cite{pc1}). The comparison shows that the observed data trend can be reproduced by this model.

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