Results 101 to 110 of about 264,425 (308)

The Millennium Galaxy Catalogue: The $M_{bh}$--$L_{spheroid}$ derived supermassive black hole mass function

, 2009
Supermassive black hole mass estimates are derived for 1743 galaxies from the Millennium Galaxy Catalogue using the recently revised empirical relation between supermassive black hole mass and the luminosity of the host spheroid.
Alister W. Graham, Allen, Aller, Balcells, Begelman, Bertin, Cameron, Cao, Caon, Croton, Di Matteo, Driver, Driver, Driver, Driver, Driver, Drory, Ferrarese, Ferrarese, Gallo, Gebhardt, Graham, Graham, Graham, Graham, Graham, Graham, Graham, Graham, Granato, Greene, Hopkins, Hopkins, Hopkins, Hopkins, Hu, Häring, Jochen Liske, Kormendy, Koushiappas, Lauer, Liske, Magorrian, Marconi, Marina Vika, Novak, Pipino, Richards, Robertson, Salucci, Satyapal, Shankar, Shankar, Shankar, Sheth, Shields, Silk, Simon P. Driver, Soltan, Tamura, Tegmark, Tundo, Ueda, Volonteri, Woo, Yu   +65 more
core   +1 more source

Possible evidence for the ejection of a supermassive black hole from an ongoing merger of galaxies [PDF]

Mon.Not.Roy.Astron.Soc.Lett.366:L22-L25,2006, 2005
Attempts of Magain et al (2005) to detect the host galaxy of the bright QSO HE0450--2958 have not been successful. We suggest that the supermassive black hole powering the QSO was ejected from the observed ULIRG at the same redshift and at 1.5 arcsec distance.
arxiv   +1 more source

The GLEAMing of the first supermassive black holes

Publications of the Astronomical Society of Australia, 2020
AbstractWe present the results of a new selection technique to identify powerful ($L_{\rm 500\,MHz} \gt 10^{27}\,\text{WHz}^{-1}$) radio galaxies towards the end of the Epoch of Reionisation. Our method is based on the selection of bright radio sources showing radio spectral curvature at the lowest frequency (${\sim}100\,\text{MHz}$) combined with the ...
Guillaume Drouart, Nick Seymour, Tim J. Galvin, Jose Afonso, Joseph R. Callingham, Carlos De Breuck, Melanie Johnston-Hollitt, Anna D. Kapińska, Matthew D. Lehnert, Joël Vernet   +9 more
openaire   +7 more sources

Supermassive black holes in the early universe [PDF]

Contemporary Physics, 2019
22 pages, 9 figures, Invited Review, Contemporary Physics, in ...
Aaron Smith, Volker Bromm
openaire   +3 more sources

Stellar Collisions in Galactic Nuclei: Impact on Destructive Events Near a Supermassive Black Hole

The Astrophysical Journal, 2023
The centers of galaxies host both a supermassive black hole and a dense stellar cluster. Such an environment should lead to stellar collisions, possibly at very high velocities so that the total energy involved is of the same order as supernova ...
Shmuel Balberg, Gilad Yassur
doaj   +1 more source

Evolution of Supermassive Black Holes [PDF]

, 2007
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 for assembling black holes and forming spheroids in galaxy halos. The evidence is therefore in favour
openaire   +3 more sources

A NEARLY NAKED SUPERMASSIVE BLACK HOLE [PDF]

The Astrophysical Journal, 2017
ABSTRACT During a systematic search for supermassive black holes (SMBHs) not in galactic nuclei, we identified the compact, symmetric radio source B3 1715+425 with an emission-line galaxy offset ≈ 8.5
James J. Condon, Yuri Y. Kovalev, Yuri Y. Kovalev, Leonid Petrov, Jeremy Darling   +4 more
openaire   +4 more sources

The estimation of black-hole masses in distant radio galaxies [PDF]

, 2010
We have estimated the masses of the central supermassive black holes of 2442 radio galaxies froma catalog compiled using data from the NED, SDSS, and CATS databases. Mass estimates based on optical photometry and radio data are compared.
A. Franceschini, A. I. Kopylov, A. Laor, A. Loeb, C. H. Nelson, C. J. Willot, C. Lang, D. Betton, D. P. Schneider, F. C. Adams, G. Bruzual, I. Yi, J. J. Condon, J. Kormendy, J. Kormendy, J. Magorian, J. Silk, K. Gebhardt, L. Ferrarese, M. Bolzonella, M. Breugel van, M. G. Haehlnet, M. Gu, M. L. Khabibullina, M. L. Khabibullina, M. L. Khabibullina, M. L. Khabibullina, M. Lacy, O. V. Verkhodanov, O. V. Verkhodanov, O. V. Verkhodanov, O. V. Verkhodanov, O. V. Verkhodanov, O. V. Verkhodanov, O. V. Verkhodanov, O. V. Verkhodanov, O. V. Verkhodanov, O.V. Verkhodanov, P. Salucci, R. Falomo, R. J. McLure, R. J. McLure, S. Iskudarian, S. Rawlings, S. Tremaine, T. Matteo Di, T. R. Lauer, V. Sahni, W.-H. Bian, X. Fan, Y. Lu, Yu. P. Pskovskii   +51 more
core   +1 more source

Testing conformal gravity with the supermassive black hole in 1H0707-495 [PDF]

Physical Review D, 2018
Recently, two of us have found a family of singularity-free rotating black hole solutions in Einstein's conformal gravity. These spacetimes are characterized by three parameters: the black hole mass $M$, the black hole spin angular momentum $J$, and a ...
Menglei Zhou, Z. Cao, Askar B. Abdikamalov, Dimitry Ayzenberg, C. Bambi, L. Modesto, S. Nampalliwar   +6 more
semanticscholar   +1 more source

Interplay of Magnetic Reconnection and Current Sheet Kink Instability in the Earth's Magnetotail

Geophysical Research Letters, Volume 52, Issue 2, 28 January 2025.
Abstract Magnetic reconnection and current sheet kink instability often develop concurrently in current sheets, yet their dynamic interplay remains unclear. We investigate their interaction in the magnetotail of a 3D global magnetospheric hybrid‐Vlasov simulation. We identify the instability growth and saturation phase and estimate the evolution of the
G. Cozzani, M. Alho, I. Zaitsev, H. Zhou, S. Hoilijoki, L. Turc, M. Grandin, K. Horaites, M. Battarbee, Y. Pfau‐Kempf, U. Ganse, K. Papadakis, M. Palmroth   +12 more
wiley   +1 more source