Results 71 to 80 of about 6,310 (180)

Supermassive black holes in spiral galaxies [PDF]

open access: yesProceedings of the International Astronomical Union, 2004
6 pages, 5 figures, to be published in "The Interplay among Black Holes, Stars and ISM in Galactic Nuclei," Th. Storchi Bergmann, L.C. Ho & H.R.
openaire   +2 more sources

The Black Hole Spin Controversy [PDF]

open access: yes, 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  

A semi-empirical model to constrain the growth of supermassive black holes [PDF]

open access: yes, 2022
openThe presence of super massive black holes (SMBHs) at the center of galaxies has been proved by the most recent observations. The mass of these SMBHs is found to correlate with a number of properties of the host galaxies and such relations have been ...
CHERUBINI, AGNESE
core  

Clustering and redshift-space distortions in QSO and galaxy surveys [PDF]

open access: yes, 2006
In this thesis, we exploit the potential of existing QSO and galaxy surveys for investigating the nature of the large scale structure in the Universe. A detailed analysis of clustering and redshift- space distortions allows us to constrain cosmological ...
Cruz da Angela, José Antonio   +1 more
core  

Tiny Galaxies Reveal Secrets of Supermassive Black Holes

open access: yes, 2022
https://www.quantamagazine.org/tiny-galaxies-reveal-secrets-of-supermassive-black-holes-20220314/In 2008, Marta Volonteri helped develop a radical proposal: Astronomers should search the smallest of galaxies for colossal black holes — hulking behemoths ...
Volonteri, Marta
core  

Supermassive Black Holes

open access: yes, 2007
26 pages, 15 figures, to appear in "Kerr Spacetime: Rotating Black Holes in General Relativity" eds. D.L. Wiltshire, M. Visser and S.M. Scott, (Cambridge Univ. Press)
openaire   +2 more sources

Primordial Origins of Supermassive Black Holes

open access: yes, 2019
At the center of the Milky Way sits a supermassive black hole named Sagittarius A*1, which is over a million times the mass of our sun. Other galaxy centers host similar black holes which are up to thousands of times larger than even Sagittarius A*. Some
Black, William, Neilson, David
core  

Supermassive black holes: Coevolution (or not) of black holes and host galaxies [PDF]

open access: yesProceedings of the International Astronomical Union, 2012
AbstractSupermassive black holes (BHs) have been found in 75 galaxies by observing spatially resolved dynamics. The Hubble Space Telescope (HST) revolutionized BH work by advancing the subject from its ‘proof of concept’ phase into quantitative studies of BH demographics.
openaire   +2 more sources

Higher harmonics increase LISA's mass reach for supermassive black holes

open access: yes, 2007
Open Access.urrent expectations on the signal-to-noise ratios and masses of supermassive black holes which the Laser Interferometer Space Antenna (LISA) can observe are based on using in matched filtering only the dominant harmonic of the inspiral ...
Sathyaprakash, B.S.   +12 more
core   +1 more source

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