Results 51 to 60 of about 205,282 (201)

Tidal Stripping of a White Dwarf by an Intermediate-mass Black Hole

open access: yesThe Astrophysical Journal, 2023
During the inspiralling of a white dwarf (WD) into an intermediate-mass black hole (∼10 ^2−5 M _⊙ ), both gravitational waves (GWs) and electromagnetic (EM) radiation are emitted.
Jin-Hong Chen   +2 more
doaj   +1 more source

Investigating slim disk solutions for HLX-1 in ESO 243-49 [PDF]

open access: yes, 2012
The hyper luminous X-ray source HLX-1 in the galaxy ESO 243-49, currently the best intermediate mass black hole candidate, displays spectral transitions similar to those observed in Galactic black hole binaries, but with a luminosity 100-1000 times ...
Barret, D.   +9 more
core   +5 more sources

A Comparison of Intermediate Mass Black Hole Candidate ULXs and Stellar-Mass Black Holes [PDF]

open access: yes, 2004
Cool thermal emission components have recently been revealed in the X-ray spectra of a small number of ultra-luminous X-ray (ULX) sources with L_X > 1 E+40 erg/s in nearby galaxies.
A. C. Fabian   +5 more
core   +1 more source

An intermediate‐mass black hole candidate in M51? [PDF]

open access: yesAstronomische Nachrichten, 2016
AbstractWe present the current results of an investigation into M51 ULX‐7, using archival data from XMM‐Newton, Chandra and NuSTAR, and optical and radio data from HST and VLA. The source has a consistently hard power‐law X‐ray spectrum and high short‐term variability.
openaire   +3 more sources

Mass estimate of the Swift J 164449.3+573451 supermassive black hole based on the 3:2 QPO resonance hypothesis [PDF]

open access: yes, 2012
A dormant Swift source J 164449.3+573451 (Sw 164449+57)recently experienced a powerful outburst, caused most probably by a tidal disruption of a star by the super-massive black hole at the center of the source.
Abramowicz, M. A., Liu, F. K.
core   +1 more source

Optically thick winds of very massive stars suppress intermediate-mass black hole formation

open access: yesAstronomy & Astrophysics
Intermediate-mass black holes (IMBHs) are the link between stellar-mass and supermassive black holes. Gravitational waves have started to unveil a population of IMBHs in the ~100–300 M⊙ range. Here, we investigate the formation of IMBHs from non-rotating
Torniamenti Stefano   +5 more
doaj   +1 more source

Intermediate-mass Black Holes’ Effects on Compact Object Binaries

open access: yesThe Astrophysical Journal, 2020
Abstract Although their existence is not yet confirmed observationally, intermediate-mass black holes (IMBHs) may play a key role in the dynamics of galactic nuclei. In this paper, we neglect the effect of the nuclear star cluster itself and investigate only how a small reservoir of IMBHs influences the secular dynamics of stellar-mass ...
Barnabás Deme   +2 more
openaire   +3 more sources

Intermediate-mass black hole binary evolution in nuclear star clusters: The effect of the stellar-mass black hole population

open access: yesAstronomy & Astrophysics
Aims. In this study, we investigate the dynamics of intermediate-mass black hole (IMBH) binaries within nuclear star clusters (NSCs) that contain a population of stellar-mass black holes (BHs).
Khan Fazeel Mahmood   +6 more
doaj   +1 more source

Fast Spinning Pulsars as Probes of Massive Black Holes' Gravity [PDF]

open access: yes, 2014
Dwarf galaxies and globular clusters may contain intermediate mass black holes ($10^{3}$ to $10^{5}$ solar masses) in their cores. Estimates of ~$10^{3}$ neutron stars in the central parsec of the Galaxy and similar numbers in small elliptical galaxies ...
Sarty, Gordon E.   +2 more
core   +2 more sources

Growing the Intermediate-mass Black Hole in Omega Centauri

open access: yesThe Astrophysical Journal Letters
The recent detection of fast-moving stars in the core of Omega Centauri ( ω Cen), the most massive globular cluster (GC) in the Milky Way, has provided strong evidence for the presence of an intermediate-mass black hole (IMBH).
Elena González Prieto   +2 more
doaj   +1 more source

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