Results 141 to 150 of about 159,631 (288)
SWIFT COALESCENCE OF SUPERMASSIVE BLACK HOLES IN COSMOLOGICAL MERGERS OF MASSIVE GALAXIES [PDF]
, 2016 Supermassive black holes (SMBHs) are ubiquitous in galaxies with a sizable mass. It is expected that a pair of SMBHs originally in the nuclei of two merging galaxies would form a binary and eventually coalesce via a burst of gravitational waves.
F. Khan +4 more
semanticscholar +1 more source
The Astrophysical JournalMany stellar-mass black holes (sBHs) are expected to orbit supermassive black holes at galactic centers. For galaxies with active galactic nuclei, it is likely that the sBHs reside in a disk.
Barak Rom, Re’em Sari, Dong Lai
doaj +1 more source
, 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. +7 more
core +1 more source
Supermassive black holes formed by direct collapse of inflationary perturbations [PDF]
, 2016 We propose a mechanism of producing a new type of primordial perturbations that collapse to primordial black holes whose mass can be as large as necessary for them to grow to the supermassive black holes observed at high redshifts, without contradicting ...
T. Nakama, T. Suyama, J. Yokoyama
semanticscholar +1 more source
Two Radio Cores in GPS J1543-0757: A New Dual Supermassive Black Hole System?
The Astrophysical JournalWe report on the discovery of a dual supermassive black hole system in the radio galaxy J1543−0757, with a projected separation between the two black holes of ∼46 mas. The result is based on recent multifrequency observations using the Very Long Baseline
Xiaopeng Cheng, Bong Won Sohn
doaj +1 more source
Supermassive Black Holes and Galaxy Formation [PDF]
, 2002 Abstract Predicted by the theory of general relativity, black holes are among the strangest objects known to exist. A point in space usually has a past and a future. An explosion is an example of a point in space–time. The explosion is both at a specific point in space and at a specific time.
openaire +3 more sources
GalaxiesWe propose that modifications to the Higgs potential within a narrow atmospheric layer near the event horizon of an astrophysical black hole could significantly enhance the rate of sphaleron transitions, as well as transform the Chern–Simons number into ...
Merab Gogberashvili +1 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
Bayesian Black Hole Photogrammetry
The Astrophysical JournalWe propose an analytic dual-cone accretion model for horizon-scale images of the cores of low-luminosity active galactic nuclei, including those observed by the Event Horizon Telescope (EHT).
Dominic O. Chang +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 +40 more
core +1 more source