Results 101 to 110 of about 163,876 (250)

Why are AGN found in High Mass Galaxies?

open access: yes, 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

Mass–redshift degeneracy for the gravitational-wave sources in the vicinity of supermassive black holes [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society: Letters, 2017
Retrieving the mass of a gravitational-wave (GW) source is a fundamental but difficult problem because the mass is degenerate with redshift. In astronomy, three types of redshift exist, namely cosmological, Doppler, and gravitational redshift, but the ...
Xian Chen, Shuo Li, Zhoujian Cao
semanticscholar   +1 more source

Supermassive black holes in the EAGLE Universe : revealing the observables of their growth. [PDF]

open access: yes, 2016
We investigate the evolution of supermassive black holes in the ‘Evolution and Assembly of GaLaxies and their Environments’ (EAGLE) cosmological hydrodynamic simulations. The largest of the EAGLE volumes covers a (100 cMpc)3 and includes state-of-the-art
Y. Rosas-Guevara   +7 more
semanticscholar   +1 more source

Phenomenological Analogies in Black Hole Systems of all Masses

open access: yes, 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

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

open access: yes, 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

Fast plunges into Kerr black holes [PDF]

open access: yes, 2015
Most extreme-mass-ratio-inspirals of small compact objects into supermassive black holes end with a fast plunge from an eccentric last stable orbit.
Hadar, Shahar   +2 more
core   +2 more sources

Observational implications of cosmologically coupled black holes

open access: yesThe Open Journal of Astrophysics, 2023
It was recently suggested that "cosmologically coupled" black holes with masses that increase in proportion to the volume of the Universe might constitute the physical basis of dark energy.
Sohan Ghodla   +3 more
doaj   +1 more source

Updated Mass Scaling Relations for Nuclear Star Clusters and a Comparison to Supermassive Black Holes

open access: yes, 2013
We investigate whether nuclear star clusters and supermassive black holes follow a common set of mass scaling relations with their host galaxy's properties, and hence can be considered to form a single class of central massive object.
Alister W. Graham   +39 more
core   +1 more source

The Cosmic History of Black Hole Growth from Deep Multiwavelength Surveys

open access: yesAdvances in Astronomy, 2012
Significant progress has been made in the last few years on understanding how supermassive black holes form and grow. In this paper, we begin by reviewing the spectral signatures of active galactic nuclei (AGN) ranging from radio to hard X-ray ...
Ezequiel Treister, C. Megan Urry
doaj   +1 more source

THE SINFONI BLACK HOLE SURVEY: THE BLACK HOLE FUNDAMENTAL PLANE REVISITED AND THE PATHS OF (CO)EVOLUTION OF SUPERMASSIVE BLACK HOLES AND BULGES [PDF]

open access: yes, 2016
We investigate the correlations between the black hole (BH) mass MBH, the velocity dispersion σ, the bulge mass MBu, the bulge average spherical density &rgr; h ?> , and its spherical half-mass radius rh, constructing a database of 97 galaxies (31 core ...
R. Saglia   +9 more
semanticscholar   +1 more source

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