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Evolution of growing black holes in axisymmetric galaxy cores

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

N-body realizations of axisymmetric collisional galaxy cores (e.g. M32, M33, NGC 205, Milky Way) with embedded growing black holes are presented. Stars which approach the disruption sphere are disrupted and accreted to the black hole. We measure the zone of influence of the black hole and disruption rates in relaxation time-scales. We show that secular gravitational instabilities dominate the initial core dynamics, while the black hole is small and growing due to the consumption of stars. Later, the black hole potential dominates the core, and the loss cone theory can be applied. Our simulations show that central rotation in galaxies cannot be neglected for relaxed systems, and compare and discuss our results with the standard theory of spherically symmetric systems.

Original languageEnglish
Pages (from-to)57-69
Number of pages13
JournalMonthly Notices of the Royal Astronomical Society
Volume419
Issue number1
DOIs
StatePublished - Jan 2012
Externally publishedYes

Keywords

  • Black hole physics
  • Galaxies: evolution
  • Galaxies: kinematics and dynamics
  • Galaxies: nuclei
  • Gravitation

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