Results 161 to 170 of about 166,156 (289)

Dynamics Around Supermassive Black Holes: Extreme-mass-ratio Inspirals as Gravitational-wave Sources

The Astrophysical Journal
Supermassive black holes and their surrounding dense stellar environments nourish a variety of astrophysical phenomena. We focus on the distribution of stellar-mass black holes around the supermassive black hole and the consequent formation of extreme ...
Barak Rom, Itai Linial, Karamveer Kaur, Re’em Sari   +3 more
doaj   +1 more source

High-energy signatures of binary supermassive black holes

EPJ Web of Conferences, 2013
Some active galactic nuclei are supposed to harbor binary systems of supermassive black holes. They are an attractive target for gravitational wave experiments.
Vila Gabriela S., Pérez Daniela, Romero Gustavo E.   +2 more
doaj   +1 more source

Primordial black holes in cosmological simulations: growth prospects for supermassive black holes

The Open Journal of Astrophysics
It has long been suggested that a fraction of the dark matter in the Universe could exist in the form of primordial black holes (PBHs) that have existed since the radiation dominated era.
Lewis R Prole, John A Regan, Daxal Mehta, Peter Coles, Pratika Dayal   +4 more
doaj   +1 more source

INTERRUPTION OF TIDAL-DISRUPTION FLARES BY SUPERMASSIVE BLACK HOLE BINARIES [PDF]

, 2009
F. K. Liu, S. Li, Xian Chen
openalex   +1 more source

Evidence for a moderate spin from X-ray reflection of the high-mass supermassive black hole in the cluster-hosted quasar H1821+643

, 2022
Júlia Sisk-Reynés, C. S. Reynolds, James Matthews, R. Smith   +3 more
openalex   +1 more source

Super-Eddington Accretion in Quasars

Universe
This review provides an observational perspective on the fundamental properties of super-Eddington accretion onto supermassive black holes in quasars.
Paola Marziani, Karla Garnica Luna, Alberto Floris, Ascensión del Olmo, Alice Deconto-Machado, Tania M. Buendia-Rios, C. Alenka Negrete, Deborah Dultzin   +7 more
doaj   +1 more source

Tidal disruption of stars by supermassive black holes: The X-ray view

EPJ Web of Conferences, 2012
The tidal disruption of stars by supermassive black holes produces luminous soft X-ray accretion flares in otherwise inactive galaxies. First events have been discovered in X-rays with the ROSAT observatory, and have more recently been detected with XMM ...
Komossa S.
doaj   +1 more source

Inner region accretion flows onto black holes [PDF]

, 1999
We examine here the inner region accretion flows onto black holes. A variety of models are presented. We also discuss viscosity mechanisms under a variety of circumstances, for standard accretion disks onto galactic black holes and supermassive black ...
Kafatos, Menas, Subramanian, Prasad
core   +1 more source

THE MURMUR OF THE HIDDEN MONSTER: CHANDRA 'S DECADAL VIEW OF THE SUPERMASSIVE BLACK HOLE IN M31 [PDF]

, 2011
Jun Yi Koay, M. R. Garcia, W. Forman, C. Jones, Ralph Kraft, D. Lal, S. S. Murray, Q. Daniel Wang   +7 more
openalex   +1 more source

Emergence of cHz Quasiperiodic Oscillations from a Low-angular-momentum Flow onto a Supermassive Black Hole

The Astrophysical Journal Letters
Quasiperiodic oscillations (QPOs) are very common in black hole accretion systems that are seen from the modulations in luminosity. Many supermassive black hole sources (e.g., RE J1034+396, 1H 0707-495, MCG-6-30-15, 1ES 1927+654, Sgr A*) have been ...
Indu K. Dihingia, Yosuke Mizuno
doaj   +1 more source