Astronomy and Astrophysics – Astrophysics
Scientific paper
2004-07-23
Astrophys.J. 613 (2004) L37
Astronomy and Astrophysics
Astrophysics
4 pages, 3 figures. Final version published in ApJL
Scientific paper
10.1086/425073
Anisotropic gravitational radiation from a coalescing black hole binary can impart a recoil velocity of up to several hundred km/s to the remnant black hole. We examine the effects of recoiling massive black holes on their host stellar bulges, both for holes that escape their host and those that return to the galactic center via dynamical friction. We show that removal of a black hole via radiation recoil generally results in a rapidly-formed central core in the stellar system, with the effect being largest when the hole stays bound to the bulge and the recoil velocity is comparable to the bulge velocity dispersion. Black hole recoil therefore provides a mechanism for producing cores in some early type galaxies, but it is expected to be most efficient in faint ellipticals that are known to have steep density profiles. We argue that these results may hint at a significant role for gas in facilitating the coalescence of binary black holes in faint (power-law) early-type galaxies.
Boylan-Kolchin Michael
Ma Chung-Pei
Quataert Eliot
No associations
LandOfFree
Core Formation in Galactic Nuclei Due to Recoiling Black Holes 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 Core Formation in Galactic Nuclei Due to Recoiling Black Holes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Core Formation in Galactic Nuclei Due to Recoiling Black Holes will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-245834