Is NGC 6752 Hosting a Single or a Binary Black Hole?

Details Is NGC 6752 Hosting a Single or a Binary Black Hole? Is NGC 6752 Hosting a Single or a Binary Black Hole?

2003-02-26

arxiv.org/abs/astro-ph/0302545v1

Astronomy and Astrophysics

Astrophysics

To appear in "Carnegie Observatories Astrophysics Series, Vol. 1: Coevolution of Black Holes and Galaxies," ed. L. C. Ho (Pasa

Scientific paper

The five millisecond pulsars that inhabit NGC 6752 display locations or accelerations remarkably different with respect to all other pulsars known in globular clusters. This may reflect the occurrence of an uncommon dynamics in the cluster core that could be attributed to the presence of a massive perturber. We here investigate whether a single intermediate-mass black hole, lying on the extrapolation of the mass versus sigma relation observed in galaxy spheroids, or, a less massive black hole binary could play the requested role.

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