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Investigating strong gravitational lensing effects by supermassive black holes with Horndeski gravity [PDF]

open access: yesEuropean Physical Journal C: Particles and Fields, 2021
We study gravitational lensing in strong-field limit by a static spherically symmetric black hole in quartic scalar field Horndeski gravity having additional hair parameter q, evading the no-hair theorem.
J. Kumar   +2 more
semanticscholar   +2 more sources

Mass Functions of Supermassive Black Holes Across Cosmic Time [PDF]

open access: yesAdvances in Astronomy, 2011
The black hole mass function of supermassive black holes describes the evolution of the distribution of black hole mass. It is one of the primary empirical tools available for mapping the growth of supermassive black holes and for constraining ...
Kelly, Brandon C., Merloni, Andrea
core   +4 more sources

A Fundamental Relation between Supermassive Black Holes and Their Host Galaxies [PDF]

open access: bronze, 2000
The masses of supermassive black holes correlate almost perfectly with the velocity dispersions of their host bulges, Mbh ∝ σα, where α = 4.8 ± 0.5. The relation is much tighter than the relation between Mbh and bulge luminosity, with a scatter no larger
Laura Ferrarese, David Merritt
openalex   +3 more sources

Formation of Supermassive Black Holes [PDF]

open access: yesThe Astronomy and Astrophysics Review, 2010
Evidence shows that massive black holes reside in most local galaxies. Studies have also established a number of relations between the MBH mass and properties of the host galaxy such as bulge mass and velocity dispersion.
A Freise   +150 more
core   +4 more sources

SuperMassive Black Holes in Bulges [PDF]

open access: yesThe Astrophysical Journal, 2000
We present spatially extended gas kinematics at parsec-scale resolution for the nuclear regions of four nearby disk galaxies, and model them as rotation of a gas disk in the joint potential of the stellar bulge and a putative central black hole.
Alexei V. Filippenko   +13 more
core   +6 more sources

Evolution of supermassive black holes [PDF]

open access: yes, 2006
Supermassive black holes (SMBHs) are nowadays believed to reside in most local galaxies, and the available data show an empirical correlation between bulge luminosity - or stellar velocity dispersion - and black hole mass, suggesting a single mechanism ...
A. Cattaneo   +49 more
core   +4 more sources

Close supermassive binary black holes [PDF]

open access: yesNature, 2009
It has been proposed that when the peaks of the broad emission lines in active galactic nuclei (AGNs) are significantly blueshifted or redshifted from the systemic velocity of the host galaxy, this could be a consequence of orbital motion of a ...
Gaskell, C. Martin
core   +4 more sources

The first supermassive black holes [PDF]

open access: yesAstronomy & Geophysics, 2017
We briefly review the historical development of the ideas regarding the first supermassive black hole seeds, the physics of their formation and radiative feedback, recent theoretical and observational progress, and our outlook for the future.Comment ...
Bromm, Volker   +2 more
core   +4 more sources

Supermassive Black Holes Then and Now [PDF]

open access: yesAIP Conference Proceedings, 1998
Recent surveys suggest that most or all normal galaxies host a massive black hole with 1/100 to 1/1000 of the visible mass of the spheroid of the galaxy.
Richstone, D.
core   +7 more sources

The Cosmic History of Black Hole Growth from Deep Multiwavelength Surveys [PDF]

open access: yesAdvances in Astronomy, 2011
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 ...
Treister, Ezequiel, Urry, C. Megan
core   +4 more sources

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