Results 81 to 90 of about 36,081 (203)

Observational Constraints on the Self Interacting Dark Matter Scenario and the Growth of Supermassive Black Holes

, 2001
We consider the consequences of SIDM for a velocity dependent cross section per unit mass. Accretion of SIDM onto seed black holes can produce supermassive black holes that are too large for certain combinations of parameters,which is used to obtain a ...
Dalcanton J. J., de Blok W. J. G., Lacey C., Lynden-Bell D., Padmanabhan T., Persic M., Richstone D., Zhao H. S.   +7 more
core   +1 more source

Gravitational Wave Bursts from Collisions of Primordial Black Holes in Clusters

, 2010
The rate of gravitational wave bursts from the mergers of massive primordial black holes in clusters is calculated. Such clusters of black holes can be formed through phase transitions in the early Universe.
A. Cattaneo, A. Sesana, C. M. Will, H. Mouri, L. P. Grishchuk, L. Spitzer, M. Mapelli, M. Yu. Khlopov, M. Yu. Khlopov, S. G. Rubin, S. G. Rubin, S. G. Rubin, V. Dokuchaev, V. I. Dokuchaev, Y. Gao, Yu. N. Eroshenko   +15 more
core   +1 more source

Soft gamma rays from low accreting supermassive black holes and connection to energetic neutrinos. [PDF]

Nat Commun, 2021
Kimura SS, Murase K, Mészáros P.
europepmc   +1 more source

Evolution of supermassive stars as a pathway to black hole formation

, 2009
Supermassive stars, with masses greater than a million solar masses, are possible progenitors of supermassive black holes in galactic nuclei. Because of their short nuclear burning timescales, such objects can be formed only when matter is able to ...
Begelman, Begelman, Begelman, Begelman, Begelman, Bisnovatyi-Kogan, Blandford, Blandford, Bondi, Bromm, Burbidge, Clayton, Fowler, Fowler, Fuller, Hoyle, Hoyle, Iben, Levine, Mathews, Mitchell C. Begelman, Narayan, Narayan, Ozernoy, Quataert, Regan, Trenti, Trenti, Wise, Woosley   +29 more
core   +1 more source

Supermassive black holes at high redshifts [PDF]

, 2019
MeV blazars are the most luminous persistent sources in the Universe and emit most of their energy in the MeV band. These objects display very large jet powers and accretion luminosities and are known to host black holes with a mass often exceeding $10^9
Agudo, Ivan, Ajello, Marco, Baring, Matthew, Beckmann, Volker, Bozhilov, Vladimir, Buson, Sara, Castro, Daniel, Coppi, Paolo, D'Ammando, Filippo, De Angelis, Alessandro, Dominguez, Alberto, Doro, Michele, Gasparrini, Dario, Guiriec, Sylvain, Guiriec, Sylvain, Harding, J. Patrick, Hartmann, Dieter, Hays, Elizabeth, Hewitt, John W., Li, Hui, Longo, Francesco, Marcotulli, Lea, Marcowith, Alexandre, McEnery, Julie, Ojha, Roopesh, Orlando, Elena, Paliya, Vaidehi S., Perkins, Jeremy S., Petropoulou, Maria, Prandini, Elisa, The, Lih-Sin, Thompson, David, Tomsick, John, Venters, Tonia, Wadiasingh, Zorawar   +34 more
core   +1 more source

A Comparison of the X-Ray Polarimetric Properties of Stellar and Supermassive Black Holes

The Astrophysical Journal
X-ray polarization provides a new way to probe accretion geometry in black hole systems. If the accretion geometry of black holes is similar regardless of mass, we should expect the same to be true of their polarization properties.
M. Lynne Saade, Philip Kaaret, Ioannis Liodakis, Steven R. Ehlert   +3 more
doaj   +1 more source

Tidal disruption flares from stars on eccentric orbits

EPJ Web of Conferences, 2012
We study tidal disruption and subsequent mass fallback for stars approaching supermassive black holes on bound orbits, by performing three dimensional Smoothed Particle Hydrodynamics simulations with a pseudo-Newtonian potential.
Loeb A., Stone N., Hayasaki K.
doaj   +1 more source

Evolution of supermassive black holes

, 2006
Supermassive black holes (SMBHs) are nowadays believed to reside in most local galaxies, and the available data show an empirical correlation between bulge luminosity - or stellar velocity dispersion - and black hole mass, suggesting a single mechanism ...
A. Cattaneo, A. Loeb, A. Marconi, A. Marconi, A. Merloni, A. Streblyanska, A.J. Barth, A.J. Barth, A.M. Ghez, A.M. Ghez, B.J. Carr, C.J. Willott, C.L. Fryer, D.J. Eisenstein, G. Fabbiano, G. Kauffmann, G. Miniutti, G.D. Quinlan, H. Mii, J. Crummy, J. Etherington, J. Magorrian, J. Yoo, J.S.B. Wyithe, J.S.B. Wyithe, K. Gebhardt, L. Ferrarese, L. Ferrarese, M. Elvis, M. Milosavljevic, M. Volonteri, M. Volonteri, M. Volonteri, M.C. Aller, M.C. Begelman, M.G. Haehnelt, N. Häring, P. Madau, Q. Yu, Q. Yu, R. Schödel, R.R. Islam, S. Tremaine, S.L. Shapiro, S.L. Shapiro, S.M. Koushiappas, T. Matteo di, V. Bromm, V. Springel, z. Haiman   +49 more
core   +2 more sources

A population of luminous accreting black holes with hidden mergers

, 2018
Major galaxy mergers are thought to play an important part in fuelling the growth of supermassive black holes. However, observational support for this hypothesis is mixed, with some studies showing a correlation between merging galaxies and luminous ...
A DasGupta, A Sesana, AD Goulding, AK Weigel, Anna Weigel, B Groves, Benny Trakhtenbrot, C Leitherer, C Ricci, C Ricci, C Villforth, C-L Hung, Chao-Ling Hung, Claudio Ricci, D Kocevski, D Narayanan, D Patton, David B. Sanders, E Bertin, E Glikman, E Massaro, Ezequiel Treister, G Kauffmann, G Vaucouleurs de, GF Snyder, H Fu, J Brinchmann, J Kormendy, Jessica R. Lu, JL Donley, JPW Verbiest, Kevin Schawinski, KN Abazajian, L Blecha, L Mayer, Laura Blecha, Lia F. Sartori, LK Hunt, M Barden, M Koss, M Koss, M Koss, Michael J. Koss, MP Véron-Cetty, MR Blanton, MR Blanton, NA Grogin, P Jonsson, P Jonsson, PF Hopkins, PF Hopkins, Phillip Bernhard, PR Capelo, R Chary, R Narayan, RI Davies, Richard Mushotzky, RN Lang, RS Barrows, S Haan, S Wassenhove Van, Sylvain Veilleux, T Matteo Di, U Vivian, V Springel, V Springel, WH Baumgartner, Y Ohyama, Y Tang, Y-Y Chang   +69 more
core   +1 more source

87th Annual Meeting of the Meteoritical Society 2025: Abstracts

Meteoritics &Planetary Science, Volume 60, Issue S1, Page 30-350, August 2025.
wiley   +1 more source