Astronomy and Astrophysics – Astrophysics
Scientific paper
2005-08-24
Astronomy and Astrophysics
Astrophysics
4 pages, 2 figures, submitted to the Astrophysical Journal Letters, uses emulateapj.cls
Scientific paper
We present the first study of the dynamical evolution of a star cluster that combines a significant population of primordial binaries with the presence of a central black hole. We use direct N-body simulations, with a black hole mass of about one percent of the total mass of the cluster. The evolution of the binary population is strongly influenced by the presence of the black hole, which gives the cluster a large core with a central density cusp. Starting from a Plummer profile, we first encounter a phase, that last approximately 10 half-mass relaxation times, in which binaries are disrupted faster compared to analogous simulations without a black hole. Subsequently, however, binary disruption slows down significantly, due to the large core size. The dynamical interplay between the primordial binaries and the black hole thus introduces new features with respect to the scenarios investigated so far, where the influence of the black hole and of the binaries have been considered separately. Specifically, the pattern of binary destruction by an intermediate-mass black hole may leave a fingerprint that could be detected observationally.
Ardi Eliani
Hut Piet
Mineshige Shin
Trenti Michele
No associations
LandOfFree
Primordial binaries and intermediate mass black holes in globular clusters does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Primordial binaries and intermediate mass black holes in globular clusters, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Primordial binaries and intermediate mass black holes in globular clusters will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-268362