Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...391..550s&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 391, no. 2, June 1, 1992, p. 550-559.
Astronomy and Astrophysics
Astronomy
4
Active Galactic Nuclei, Black Holes (Astronomy), Mass Spectra, Star Clusters, Stellar Mass Accretion, Binary Stars, Computerized Simulation, Quasars, Stellar Evolution, Stellar Systems
Scientific paper
The extent to which individual holes in a cluster of black holes with a mass spectrum can liberate and accrete the resulting material by tidally disrupting stars they encounter, or by capturing stars as binary companions is studied. It is found that the smaller black holes in 'the halo' of such clusters can adequately supply themselves to the level M-doth or greater than 0.0001(M-doth) sub crit, and up to 0.05(M-doth)sub crit for the smallest holes, by tidal disruption, as long as the cluster is embedded in a distribution of stars of relatively high density (not less than 0.1Mcl/cu pc), and as long as the entire cluster of stars is not too compact (not less than 0.5 pc). Consideration is given to modifications this 'internal' mode of supply introduces in the spectrum emitted by such black hole clusters, and to the current status of their viability as models for AGN and QSOs in light of dynamical studies by Quinlan and Shapiro (1987, 1989).
Pacholczyk A. G.
Stepinski Tomasz F.
Stoeger William R.
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