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Can a Moderately Massive Black Hole Reverse Core Collapse?

Published online by Cambridge University Press:  04 August 2017

Martin J. Duncan
Martin J. Duncan*
Affiliation:
Astronomy Department and Physical Sciences Division, Scarborough Campus University of Toronto 1265 Military Trail, Scarborough, Ontario, Canada MIC 1A4

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Direct N-body simulations show that the heat flux from the cusp of stars surrounding an object of mass M ~ 10–100 M⊙ has a profound effect on the evolution of a cluster of N stars of mass m ~ 1 M⊙. A cluster containing an object which is ≳ 5% of its total mass expands, transferring most of the cluster binding energy to a few stars deep in the cusp within several central relaxation times. The results, together with analytic estimates, suggest that core collapse in a globular cluster will be reversed when the core mass is reduced to ~10 M. As is discussed below, this result does not depend on whether or not stars are disrupted by the black hole.

Type
May 31: External Fields and Finite-Star-Size Effects
Information
Symposium - International Astronomical Union , Volume 113: Dynamic of Stars Clusters , 1985 , pp. 415 - 417
Copyright
Copyright © Reidel 1985 

References

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