The core radius of a star cluster containing a massive black hole

Heggie, Douglas C., Hut, Piet, Mineshige, Shin, Makino, Jun and Baumgardt, Holger (2007) The core radius of a star cluster containing a massive black hole. Publications of the Astronomical Society of Japan, 59 3: L11-L14.

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Author Heggie, Douglas C.
Hut, Piet
Mineshige, Shin
Makino, Jun
Baumgardt, Holger
Title The core radius of a star cluster containing a massive black hole
Journal name Publications of the Astronomical Society of Japan   Check publisher's open access policy
ISSN 0004-6264
Publication date 2007
Sub-type Article (original research)
Volume 59
Issue 3
Start page L11
End page L14
Total pages 4
Place of publication Tokyo, Japan
Publisher Nihon Tenmon Gakkai
Language eng
Formatted abstract
We present a theoretical framework which establishes how the core radius of a star cluster varies with the mass of an assumed central black hole. Our result is that rc/rh ∝(Mbh/M)3/4 when the system is well relaxed. The theory compares favourably with a number of simulations of this problem, which extend to black hole masses of order 10% of the cluster mass. Though strictly limited as yet to clusters with stars of equal mass, our conclusion strengthens the view that clusters with large core radii are the most promising candidates in which to find a massive black hole.
Keyword Black hole physics
Galaxy : globular clusters : general
Stellar dynamics
Monte-Carlo Simulations
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mathematics and Physics
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