Results 121 to 130 of about 2,382,221 (211)
The Astrophysical Journal LettersThe centers of massive elliptical galaxies exhibit a wide range in density profiles, from central cusps to resolved cores with order kiloparsec sizes.
Kyle Kremer +4 more
doaj +1 more source
Super-Eddington Accretion in Quasars
UniverseThis review provides an observational perspective on the fundamental properties of super-Eddington accretion onto supermassive black holes in quasars.
Paola Marziani +7 more
doaj +1 more source
A Simple Model for Extracting Astrophysics from Black Hole Images
The Astrophysical JournalThe Event Horizon Telescope (EHT) is providing unprecedented high-resolution images of supermassive black holes. These images are fundamentally related to properties of the luminous accretion disks, since black holes themselves produce no light.
Alexandra G. Guerrero, Daniel E. Holz
doaj +1 more source
New Estimates of the Spin and Accretion Rate of the Black Hole M87*
The Astrophysical Journal LettersIn this Letter, we use the imaging results of M87* from the Event Horizon Telescope (EHT) to calculate the rotational velocity of the inner edge of the accretion disk and find a value of ∼0.14 c .
Michael Drew +4 more
doaj +1 more source
Evidence for supermassive black hole binaries
Publications of the Astronomical Society of AustraliaAbstract We review the state of the evidence for the existence and observational appearance of supermassive black hole binaries. Such objects are expected from standard hierarchical galaxy evolution to form after two galaxies, each containing a supermassive black hole, have merged, in the centre of the merger remnant.
Martin Gustav Heinrich Krause +12 more
openaire +3 more sources
SUPERMASSIVE BLACK HOLE AT THE GALACTIC CENTER
New Results and Actual Problems in Particle & Astroparticle Physics and Cosmology, 2014 We derive an analytical expression of a shadow size as a function of a charge in the Reissner - Nordstr?m (RN) metric. Using the derived expression we consider shadows for negative tidal charges and charges corresponding to naked singularities q=Q2/M2>1, where Q and M are black hole charge and mass, respectively.
openaire +2 more sources
Establishing accretion flares from supermassive black holes as a source of high-energy neutrinos
ESTABLISHING ACCRETION FLARES FROM SUPERMASSIVE BLACK HOLES AS A SOURCE OF HIGH-ENERGY NEUTRINOS Establishing accretion flares from supermassive black holes as a source of high-energy neutrinos / van Velzen, Sjoert (Rights reserved) (-
Bellm, Eric C. +28 more
core
Disks around merging binary black holes: From GW150914 to supermassive black holes. [PDF]
Phys Rev D, 2018 Khan A +3 more
europepmc +1 more source
The Black Hole Spin Controversy [PDF]
, 2012 Astrophysical black holes are the simplest possible objects. They are completely described by only two parameters in general relativity, their mass and the specific angular momentum, spin.
KOLEHMAINEN, MARI,JOHANNA +1 more
core