Astronomy and Astrophysics – Astrophysics – Galaxy Astrophysics
Scientific paper
2009-10-14
Astrophys. Space Sci. (2010), 325:47-58
Astronomy and Astrophysics
Astrophysics
Galaxy Astrophysics
14 pages, 3 figures, accepted for publication in Astrophysics and Space Science; fixed typos and a quote in Sec. 3
Scientific paper
10.1007/s10509-009-0170-z
Empirical evidence for both stellar mass black holes M_bh<10^2 M_sun) and supermassive black holes (SMBHs, M_bh>10^5 M_sun) is well established. Moreover, every galaxy with a bulge appears to host a SMBH, whose mass is correlated with the bulge mass, and even more strongly with the central stellar velocity dispersion sigma_c, the `M-sigma' relation. On the other hand, evidence for "intermediate-mass" black holes (IMBHs, with masses in the range 1^2 - 10^5 M_sun) is relatively sparse, with only a few mass measurements reported in globular clusters (GCs), dwarf galaxies and low-mass AGNs. We explore the question of whether globular clusters extend the M-sigma relationship for galaxies to lower black hole masses and find that available data for globular clusters are consistent with the extrapolation of this relationship. We use this extrapolated M-sigma relationship to predict the putative black hole masses of those globular clusters where existence of central IMBH was proposed. We discuss how globular clusters can be used as a constraint on theories making specific predictions for the low-mass end of the M-sigma relation.
Safonova Margarita
Shastri Prajval
No associations
LandOfFree
Extrapolating SMBH correlations down the mass scale: the case for IMBHs 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 Extrapolating SMBH correlations down the mass scale: the case for IMBHs in globular clusters, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Extrapolating SMBH correlations down the mass scale: the case for IMBHs in globular clusters will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-18828