Results 61 to 70 of about 36,081 (203)

SuperMassive Black Holes in Bulges [PDF]

, 2000
We present spatially extended gas kinematics at parsec-scale resolution for the nuclear regions of four nearby disk galaxies, and model them as rotation of a gas disk in the joint potential of the stellar bulge and a putative central black hole.
Alexei V. Filippenko, Daniel H. McIntosh, Gebhardt K., Greg Rudnick, Hans‐Walter Rix, Jorgensen I., Joseph C. Shields, Kormendy J., Luis C. Ho, Marc Sarzi, Monnet G., Nagar N. M., van der Marel R. P., Wallace L. W. Sargent   +13 more
core   +2 more sources

Shadow of a rotating squashed Kaluza-Klein black hole

Journal of High Energy Physics, 2019
We study the shadow of a rotating squashed Kaluza-Klein (KK) black hole and the shadow is found to possess distinct properties from those of usual rotating black holes.
Fen Long, Jieci Wang, Songbai Chen, Jiliang Jing   +3 more
doaj   +1 more source

Mechanism for the Suppression of Intermediate-Mass Black Holes

, 2010
A model for the formation of supermassive primordial black holes in galactic nuclei with the simultaneous suppression of the formation of intermediate-mass black holes is presented. A bimodal mass function for black holes formed through phase transitions
A. D. Dolgov, A. Dolgov, A. Dolgov, A. King, A. Starobinsky, B. J. McNamara, B. Lanzoni, D. A. Samarchenko, E. Noyola, G. Illingworth, H. Baumgardt, H. Mii, K. Gebhardt, K. J. Mack, L. M. Ozernoy, M. C. Begelman, M. C. Miller, M. G. Haehnelt, M. J. Rees, M. Mapelli, M. Yu. Khlopov, M. Yu. Khlopov, N. Kawakatu, R. R. Islam, R. R. J. Antonucci, S. G. Rubin, S. G. Rubin, S. G. Rubin, S. G. Rubin, S.-J. Rey, T. P. Roberts, V. Dokuchaev, V. I. Dokuchaev, V. I. Dokuchaev, V. I. Dokuchaev, V. I. Dokuchaev, V. I. Dokuchaev, V. I. Dokuchaev, V. I. Dokuchaev, Yu. N. Eroshenko   +39 more
core   +1 more source

Rotating scalarized supermassive black holes

European Physical Journal C: Particles and Fields
In this study, we investigate rotating black hole solutions within a scalar-Gauss–Bonnet gravity framework that incorporates a squared Gauss–Bonnet term. By employing a quadratic–exponential coupling function between the scalar field and the Gauss–Bonnet
Shoupan Liu, Yunqi Liu, Yan Peng, Cheng-Yong Zhang   +3 more
doaj   +1 more source

Why are AGN found in High Mass Galaxies?

, 2008
We use semi-analytic models implemented in the Millennium Simulation to analyze the merging histories of dark matter haloes and of the galaxies that reside in them.
Barger, Bower, Boylan-Kolchin, Colless, Croton, De Lucia, De Lucia, De Lucia, Duschl, Ferrarese, Gebhardt, Guinevere Kauffmann, Haehnelt, Hasan, Hasinger, Heckman, Ho, Hopkins, Hopkins, Hopkins, Jiang, Kang, Kauffmann, Kauffmann, Kormendy, Lan Wang, Li, Magorrian, McCarthy, Merloni, Mihos, Richards, Spergel, Springel, Springel, Steffen, Volonteri, Wang, Weinmann, Wyithe, Zheng   +40 more
core   +1 more source

Axion and the Supermassive Black Holes at high $z$ [PDF]

, 2023
Takeshi Fukuyama
openalex   +1 more source

Non-linearly scalarized supermassive black holes

European Physical Journal C: Particles and Fields
In this study, we investigate a nonlinear mechanism driving the formation of scalarized rotating black holes within a scalar-Gauss–Bonnet gravity framework that includes an additional squared Gauss–Bonnet term.
Shoupan Liu, Yunqi Liu, Yan Peng, Cheng-Yong Zhang   +3 more
doaj   +1 more source

Powerful jets from accreting black holes: evidence from the optical and infrared

, 2010
A common consequence of accretion onto black holes is the formation of powerful, relativistic jets that escape the system. In the case of supermassive black holes at the centres of galaxies this has been known for decades, but for stellar-mass black ...
Fender, R. P., Russell, D. M.
core   +1 more source

Observational evidence for a connection between SMBHs and dark matter haloes [PDF]

, 2004
We investigate the relation between circular velocity vc and bulge velocity dispersion sigma in spiral galaxies, based on literature data and new spectroscopic observations. We find a strong, nearly linear vc-sigma correlation with a negligible intrinsic
Baes, Maarten, Buyle, Pieter, Dejonghe, Herwig, Ferrarese, Laura, Gentile, Gianfranco   +4 more
core   +2 more sources

Phenomenological Analogies in Black Hole Systems of all Masses

, 2004
I review the progress made on the physics of relativistic jets from black hole systems in the context of the analogy between AGN and microquasars that was proposed one decade ago.
Mirabel, I. F.
core   +2 more sources