Results 11 to 20 of about 237,520 (386)
Intermediate-mass black holes and the fundamental plane of black hole accretion [PDF]
Monthly Notices of the Royal Astronomical Society, 2022 We present new 5 GHz VLA observations of a sample of 8 active intermediate-mass black holes with masses 10 4 . 9 < 𝑀 < 10 6 . 1 𝑀 (cid:12) found in galaxies with stellar masses 𝑀 ∗ < 3 × 10 9 𝑀 (cid:12) .
K. Gultekin +9 more
semanticscholar +3 more sources
Observing an intermediate-mass black hole GW190521 with minimal assumptions [PDF]
Physical Review D, 2020 On May 21, 2019 Advanced LIGO and Advanced Virgo detectors observed a gravitational-wave transient GW190521, the heaviest binary black-hole merger detected to date with the remnant mass of 142$\,$M$_\odot$ that was published recently. This observation is
M. Szczepańczyk +12 more
semanticscholar +9 more sources
Hypervelocity Stars from a Supermassive Black Hole–Intermediate-mass Black Hole Binary [PDF]
The Astrophysical Journal, 2018 In this paper we consider a scenario in which the currently observed hypervelocity stars in our Galaxy have been ejected from the Galactic center as a result of dynamical interactions with an intermediate-mass black hole (IMBH) orbiting the central ...
Alexander Rasskazov +6 more
semanticscholar +6 more sources
Growth of Intermediate‐Mass Black Holes in Globular Clusters [PDF]
The Astrophysical Journal, 2004 We present results of numerical simulations of sequences of binary-single scattering events of black holes in dense stellar environments. The simulations cover a wide range of mass ratios from equal mass objects to 1000:10:10 solar masses and compare purely Newtonian simulations to simulations in which Newtonian encounters are interspersed with ...
Kayhan Gültekin +2 more
openalex +5 more sources
Evidence for an intermediate-mass black hole from a gravitationally lensed gamma-ray burst [PDF]
Nature Astronomy, 2021 If gamma-ray bursts are at cosmological distances, they must be gravitationally lensed occasionally1,2. The detection of lensed images with millisecond-to-second time delays provides evidence for intermediate-mass black holes, a population that has been ...
James Paynter, R. Webster, E. Thrane
semanticscholar +1 more source
The imprint of gas on gravitational waves from LISA intermediate-mass black hole binaries [PDF]
, 2022 We study the effect of torques on circular inspirals of intermediate-mass black hole binaries (IMBHBs) embedded in gas discs, wherein both BH masses are in the range $10^2$-$10^5~\rm{M}_\odot$, up to redshift $z = 10$.
Mudit Garg +4 more
semanticscholar +1 more source
Searching for vector boson-star mergers within LIGO-Virgo intermediate-mass black-hole merger candidates [PDF]
Physical Review D, 2022 We present the first systematic search for exotic compact mergers in Advanced LIGO and Virgo events. We compare the short gravitational-wave signals GW190521, GW190426$\_$190642, GW200220$\_$061928 and the trigger 200114$\_$020818 (or S200114f) to a new ...
J. Calderón Bustillo +9 more
semanticscholar +1 more source
Intermediate-mass black holes in globular clusters [PDF]
Monthly Notices of the Royal Astronomical Society: Letters, 2012 Abstract There have been reports of possible detections of intermediate-mass black holes (IMBHs) in globular clusters (GCs). Empirically, there exists a tight correlation between the central supermassive black hole (SMBH) mass and the mean velocity dispersion of elliptical galaxies, ‘pseudo-bulges’ and classical bulges of spiral galaxies.
Yuqing Lou, Yihong Wu
openalex +4 more sources
Search for intermediate-mass black hole binaries in the third observing run of Advanced LIGO and Advanced Virgo [PDF]
Astronomy & Astrophysics, 2021 Intermediate-mass black holes (IMBHs) span the approximate mass range $100$--$10^5\,M_\odot$, between black holes (BHs) formed by stellar collapse and the supermassive BHs at the centers of galaxies.
The Ligo Scientific Collaboration +2 more
semanticscholar +1 more source
On the dynamical formation of accreting intermediate mass black holes [PDF]
Astronomical & Astrophysical Transactions, 2007 We compute the probability that intermediate mass black holes (IMBHs) capture companions due to dynamical interactions and become accreting sources, and explore the possibility that the accreting IMBHs would appear as ultra-luminous X-ray sources (ULXs). We focus on IMBHs originating from low-metallicity Population III stars.
A. G. Kuranov +4 more
openalex +6 more sources