Results 121 to 130 of about 38,906 (246)

Lyman edges in supermassive black hole binaries

, 2014
We propose a new spectral signature for supermassive black hole binaries (SMBHBs) with circumbinary gas disks: a sharp drop in flux blueward of the Lyman limit. A prominent edge is produced if the gas dominating the emission in the Lyman continuum region
Generozov, Aleksey, Haiman, Zoltan
core   +1 more source

Pair Plasma Production in a Force‐free Magnetosphere around a Supermassive Black Hole [PDF]

, 1998
Kouichi Hirotani, Isao Okamoto
openalex   +1 more source

Primordial black holes as supermassive black hole seeds

Journal of Cosmology and Astroparticle Physics
Abstract The presence of supermassive black holes (SMBHs, M • ∼ 106-10 M ⊙) in the first cosmic Gyr (z ≳ 6) challenges current models of BH formation and evolution. We propose a novel mechanism for the formation of early SMBH seeds based on primordial black holes (PBHs).
F. Ziparo, S. Gallerani, A. Ferrara
openaire   +2 more sources

High Proper‐Motion Stars in the Vicinity of Sagittarius A*: Evidence for a Supermassive Black Hole at the Center of Our Galaxy [PDF]

, 1998
A. M. Ghez, B. Klein, M. Morris, E. E. Becklin   +3 more
openalex   +1 more source

Supermassive Black Holes in Early-Type Galaxies: Relationship with Radio Emission and Constraints on the Black Hole Mass Function [PDF]

, 1998
A. Franceschini, S. Vercellone, A. C. Fabian   +2 more
openalex   +1 more source

The Use of Binary Black Holes Merging in Active Galactic Nuclei Disks for Hubble Constant Measurements

The Astrophysical Journal
We study the impact of environmental effects on the measurement of the Hubble constant ( H _0 ) from gravitational-wave (GW) observations of binary black hole mergers residing in active galactic nuclei (AGNs) near the central supermassive black hole ...
Guo-Peng Li, Xi-Long Fan
doaj   +1 more source

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

, 2000
Laura Ferrarese, David Merritt
openalex   +1 more source

A Stellar Dynamical Mass Measurement of the Supermassive Black Hole in NGC 3258

The Astrophysical Journal
We present a stellar dynamical mass measurement of the supermassive black hole in the elliptical (E1) galaxy NGC 3258. Our findings are based on integral field unit spectroscopy from the Multi Unit Spectroscopic Explorer (MUSE) observations in narrow ...
Thomas K. Waters, Kayhan Gültekin, Karl Gebhardt, Neil Nagar, Vanessa Ávila   +4 more
doaj   +1 more source

Quasars: a supermassive rotating toroidal black hole interpretation [PDF]

, 2000
R. J. Spivey
openalex   +1 more source

The Effect of the Self‐Gravity of Gas on Gas Fueling in a Barred Galaxy with a Supermassive Black Hole [PDF]

, 2000
Hiroyuki Fukuda, Asao Habe, Keiichi Wada
openalex   +1 more source