Results 11 to 20 of about 6,073,030 (236)

Intermediate mass black holes in star clusters [PDF]

Progress of Theoretical Physics Supplement, 2004
We have performed N-body simulations of the formation of intermediate mass black holes in young star clusters and the subsequent dynamical evolution of star clusters containing massive black holes.
Makino, J, Baumgardt, H
core   +3 more sources

Intermediate-mass black holes in globular clusters

, 2013
For a sample of nine Galactic globular clusters we measured the inner kinematic profiles with integral-field spectroscopy that we combined with existing outer kinematic measurements and HST luminosity profiles. With this information we are able to detect
Gebhardt, K., Jalali, B., Baumgardt, H., De Zeeuw, P. T., Kissler-Patig, M., Feldmeier, A., Lützgendorf, N., Noyola, E., Neumayer, N.   +8 more
core   +4 more sources

Search for gravitational waves from intermediate mass binary black holes [PDF]

, 2012
We present the results of a weakly modeled burst search for gravitational waves from mergers of nonspinning intermediate mass black holes in the total mass range 100-450M and with the component mass ratios between 11 and 41.
Stefszky, Michael, Blackburn, James Kent, Chow, Jong, Howell, E, Abbott, Robert, Etzel, T, Mullavey, Adam, Wade, Andrew, Anderson, S B, Shaddock, Daniel, Ivanov, A, Nguyen, Thanh, Lam, Ping Koy, Wang, Michael, Scott, Susan M, Hosken, Dave, Heefner, J, Chua, Sheon, Araya, M, Miller, John, Mow-Lowry, C, Kozak, D, Meshkov, S, Slagmolen, Bram, Inta, Ra, Abbott, B, McClelland, David, Abadie, J   +27 more
core   +15 more sources

Constraining the Low-mass End of the Black Hole Mass Function and the Active Fraction of the Intermediate-mass Black Holes [PDF]

The Astrophysical Journal
We investigate the black hole mass function (BHMF) and the Eddington ratio distribution function (ERDF), focusing on the intermediate-mass black holes (IMBHs) with masses down to M _• ∼ 10 ^4 M _⊙ .
Hojin Cho, Jong-Hak Woo
doaj   +2 more sources

Tracing intermediate-mass black holes in the Galactic Centre [PDF]

Monthly Notices of the Royal Astronomical Society, 2008
We have developed a new method for post-Newtonian, high-precision integration of stellar systems containing a super-massive black hole (SMBH), splitting the forces on a particle between a dominant central force and perturbations.
Baumgardt, H., Lockmann, U.
core   +7 more sources

Rapid Intermediate-mass Black Hole Formation via Runaway Mergers of Black Holes

The Astrophysical Journal Letters
Observations indicate that supermassive black holes in high-redshift galaxies formed on timescales far shorter than classical growth models allow. One hypothesis suggests intermediate-mass black hole (IMBH) seeds as an efficient growth channel.
Yining Sun, Long Wang
doaj   +3 more sources

Einstein-Yang-Mills black holes in anti de-Sitter space [PDF]

, 2012
In this thesis we consider Einstein-Yang-Mills black holes in asymptotically anti-de Sitter space, in the presence of an su(N) gauge eld. For a purely magnetic gauge eld we de ne a set of charges, namely the mass and N - 1 gauge invariant magnetic ...
Shepherd, Benjamin L
core   +5 more sources

Intermediate-mass black holes and the Fundamental Plane of black hole accretion

Monthly Notices of the Royal Astronomical Society, 2022
ABSTRACT We present new 5 GHz Very Large Array observations of a sample of eight active intermediate-mass black holes with masses 104.9 M⊙ < M < 106.1 M⊙ found in galaxies with stellar masses M* < 3 × 109 M⊙. We detected five of the eight sources at high significance.
Kayhan Gültekin, Kristina Nyland, Nichole Gray, Greg Fehmer, Tianchi Huang, Matthew Sparkman, Amy E Reines, Jenny E Greene, Edward M Cackett, Vivienne Baldassare   +9 more
openaire   +2 more sources

Constraints on Galactic intermediate mass black holes [PDF]

Monthly Notices of the Royal Astronomical Society, 2006
Intermediate Mass Black Holes (IMBHs; 10^1.3-5 M_sun) are thought to form as relics of Population III stars or from the runaway collapse of stars in young clusters; their number and very existence are uncertain. We ran N-body simulations of Galactic IMBHs, modelling them as a halo population distributed according to a Navarro, Frenk & White (NFW ...
Mapelli, M., FERRARA, ANDREA, Rea, N.
openaire   +2 more sources

Intermediate-mass black holes in galactic nuclei [PDF]

Proceedings of the International Astronomical Union, 2004
We present the first homogeneous sample of intermediate-mass black hole candidates in active galactic nuclei. Starting with broad-line active nuclei from the Sloan Digital Sky Survey, we use the linewidth-luminosity-mass scaling relation to select a sample of 19 galaxies in the mass range M_BH ~ 8 x 10^4 - 10^6 solar masses.
Greene, Jenny E., Ho, Luis C., Barth, Aaron J.   +2 more
openaire   +3 more sources