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Active galactic nuclei. IV - Supplying black hole clusters by tidal disruption and by tidal capture of starsThe 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-dot sub h or greater than 0.0001(M-dot sub h) sub crit, and up to 0.05(M-dot sub h)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 0.1M sub cl/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).
Document ID
19920057139
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Stoeger, W. R.
(Vatican Observatory; Steward Observatory Tucson, AZ, United States)
Pacholczyk, A. G.
(Steward Observatory Tucson, AZ, United States)
Stepinski, T. F.
(Lunar and Planetary Institute Houston, TX, United States)
Date Acquired
August 15, 2013
Publication Date
June 1, 1992
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 391
Issue: 2 Ju
ISSN: 0004-637X
Subject Category
Astrophysics
Accession Number
92A39763
Funding Number(s)
CONTRACT_GRANT: NASW-4574
Distribution Limits
Public
Copyright
Other

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