Astronomy and Astrophysics – Astrophysics
Scientific paper
2008-09-06
Astronomy and Astrophysics
Astrophysics
5 pages, 2 figures, accepted to be published on MNRAS Letter
Scientific paper
10.1111/j.1745-3933.2008.00552.x
Growing evidence indicate supermassive black holes (SMBHs) in a mass range of $M_{\rm BH}$$\sim 106-10^{10}M_{\odot}$ lurking in central stellar bulges of galaxies.Extensive observations reveal fairly tight power laws of $M_{\rm BH}$ versus the mean stellar velocity dispersion $\sigma$ of the host stellar bulge.Together with evidence for correlations between $M_{\rm BH}$ and other properties of host bulges, the dynamic evolution of a bulge and the formation of a central SMBH should be linked. In this Letter, we reproduce the empirical $M_{\rm BH}-\sigma$ power laws based on our recent theoretical analyses (Lou & Wang; Wang & Lou; Lou, Jiang & Jin) for a self-similar general polytropic quasi-static dynamic evolution of bulges with self-gravity and spherical symmetry and present a sensible criterion of forming a central SMBH. The key result is $M_{\rm BH}={\cal L}\sigma^{1/(1-n)}$ where $2/3
Jiang Yan-Fei
Lou Yu-Qing
No associations
LandOfFree
Supermassive Black Holes in Galactic Bulges 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 Supermassive Black Holes in Galactic Bulges, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Supermassive Black Holes in Galactic Bulges will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-4940