Results 71 to 80 of about 166,156 (289)
The rapid growth phase of supermassive black holes [PDF]
Monthly notices of the Royal Astronomical Society, 2018 We investigate the rapid growth phase of supermassive black holes (BHs) within the hydrodynamical cosmological \eagle simulation. This non-linear phase of BH growth occurs within $\sim$$L_{*}$ galaxies, embedded between two regulatory states of the ...
S. McAlpine +5 more
semanticscholar +1 more source
Primordial black holes as dark matter candidates
SciPost Physics Lecture Notes, 2022 We review the formation and evaporation of primordial black holes (PBHs) and their possible contribution to dark matter. Various constraints suggest they could only provide most of it in the mass windows $10^{17}$ - $10^{23}\,$g or $10$ - $10^{2}\,M_ ...
Bernard Carr, Florian Kuhnel
doaj +1 more source
Starburst-AGN Connection: A Lesson from High-z Powerful Radio Galaxies
, 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
Observational evidence for a connection between SMBHs and dark matter haloes [PDF]
, 2004 We investigate the relation between circular velocity vc and bulge velocity dispersion sigma in spiral galaxies, based on literature data and new spectroscopic observations. We find a strong, nearly linear vc-sigma correlation with a negligible intrinsic
Baes, Maarten +4 more
core +2 more sources
Formation of Supermassive Black Hole Seeds [PDF]
Publications of the Astronomical Society of Australia, 2016 AbstractThe detection of quasars at z > 6 unveils the presence of supermassive black holes of a few billion solar masses. The rapid formation process of these extreme objects remains a fascinating and open issue. Such discovery implies that seed black holes must have formed early on, and grown via either rapid accretion or BH/galaxy mergers. In this
Latif, M., FERRARA, ANDREA
openaire +2 more sources
Detection of Supermassive Black Holes in Two Virgo Ultracompact Dwarf Galaxies [PDF]
, 2017 We present the detection of supermassive black holes (BHs) in two Virgo ultracompact dwarf galaxies (UCDs), VUCD3 and M59cO. We use adaptive optics assisted data from the Gemini/NIFS instrument to derive radial velocity dispersion profiles for both ...
Christopher P. Ahn +15 more
semanticscholar +1 more source
Early formation of supermassive black holes via dark matter self-interactions [PDF]
Journal of Cosmology and Astroparticle Physics, 2018 The existence of supermassive black holes at high redshifts (z∼7) is difficult to accommodate in standard astrophysical scenarios. It has been shown that dark matter models with a subdominant self-interacting component are able to produce early seeds for
J. Choquette +2 more
semanticscholar +1 more source
Supermassive Black Hole Growth in Hierarchically Merging Nuclear Star Clusters
The Astrophysical JournalSupermassive black holes are prevalent at the centers of massive galaxies, and their masses scale with galaxy properties, increasing evidence suggesting that these trends continue to low stellar masses.
Konstantinos Kritos +7 more
doaj +1 more source
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
J. J. Condon +3 more
openaire +4 more sources
Orbital Migration of Interacting Stellar Mass Black Holes in Disks around Supermassive Black Holes
, 2019 The merger rate of stellar-mass black hole binaries (sBHBs) inferred by the Advanced Laser Interferometer Gravitational-Wave Observatory (LIGO) suggests the need for an efficient source of sBHB formation.
Amy Secunda +7 more
semanticscholar +1 more source