Galactic nuclei activity sustained by globular cluster mass accretion.

Details Galactic nuclei activity sustained by globular cluster mass accretion. Galactic nuclei activity sustained by globular cluster mass accretion.

Dec 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998p%26ss...46.1579c&link_type=abstract

Planet. Space Sci., Vol. 46, No. 11 - 12, p. 1579 - 1581

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Galactic Nuclei: Accretion, Galactic Nuclei: Activity, Galactic Nuclei: Globular Clusters

Scientific paper

The decay of globular clusters to the centre of their mother galaxy corresponds to carrying a quantity of mass sufficient to sustain the gravitational activity of a small pre-existing nucleus and to accrete it in a significant way. This is due to both dynamical friction of field stars and tidal disruption by the compact nucleus. The results of the simplified model presented here show that the active galactic nuclei luminosity and lifetime depend on the characteristics of the globular cluster system and are quite insensitive to the nucleus' initial mass.

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