Results 121 to 130 of about 168,088 (243)

Selection bias in dynamically measured supermassive black hole samples: consequences for pulsar timing arrays [PDF]

open access: yes, 2016
Supermassive black hole–host galaxy relations are key to the computation of the expected gravitational wave background (GWB) in the pulsar timing array (PTA) frequency band.
A. Sesana   +3 more
semanticscholar   +1 more source

The birth of a supermassive black hole binary [PDF]

open access: yes, 2017
We study the dynamical evolution of supermassive black holes, in the late stage of galaxy mergers, from kpc to pc scales. In particular, we capture the formation of the binary, a necessary step before the final coalescence, and trace back the main ...
H. Pfister   +5 more
semanticscholar   +1 more source

Assembly of supermassive black hole seeds

open access: yes, 2018
We present a suite of six fully cosmological, three-dimensional simulations of the collapse of an atomic cooling halo in the early Universe. We use the moving-mesh code arepo with an improved primordial chemistry network to evolve the hydrodynamical and ...
Becerra, Fernando   +3 more
core   +1 more source

Close supermassive binary black holes [PDF]

open access: yesNature, 2010
Nature in press. 4 pages, 1 figure [Title, abstract, text, and references shortened to conform to journal requirements]
openaire   +3 more sources

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

A systematic search for close supermassive black hole binaries in the Catalina Real-time Transient Survey [PDF]

open access: yes, 2015
Hierarchical assembly models predict a population of supermassive black hole (SMBH) binaries. These are not resolvable by direct imaging but may be detectable via periodic variability (or nanohertz frequency gravitational waves).
M. Graham   +8 more
semanticscholar   +1 more source

Starburst-AGN Connection: A Lesson from High-z Powerful Radio Galaxies

open access: yes, 2004
Powerful radio galaxies at high redshift are highly useful in studies of early evolution of AGN-hosting galaxies because their observed optical and near infrared light are dominated by their stellar population rather than the nonthermal continuum emitted
Taniguchi, Yoshiaki
core   +2 more sources

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

Strong deflection gravitational lensing by a modified Hayward black hole

open access: yes, 2017
A modified Hayward black hole is a nonsingular black hole. It is proposed to form when the pressure generated by quantum gravity can stop matter's collapse as the matter reaches Planck density. Strong deflection gravitational lensing happening nearby its
Xie, Yi, Zhao, Shan-Shan
core   +1 more source

Home - About - Disclaimer - Privacy