Results 31 to 40 of about 237,520 (386)
Extremely efficient mergers of intermediate-mass black hole binaries in nucleated dwarf galaxies [PDF]
Monthly notices of the Royal Astronomical Society, 2021 Gravitational waves emitted by merging black holes between ∼104 and 107 M⊙ will be detectable by the Laser Interferometer Space Antenna (LISA) with signal-to-noise ratios of several hundred out to redshift 20.
F. Khan, K. Holley-Bockelmann
semanticscholar +1 more source
Refining the mass estimate for the intermediate-mass black hole candidate in NGC 3319 [PDF]
Publications Astronomical Society of Australia, 2021 Recent X-ray observations by Jiang et al. have identified an active galactic nucleus (AGN) in the bulgeless spiral galaxy NGC 3319, located just $14.3\pm 1.1$ Mpc away, and suggest the presence of an intermediate-mass black hole (IMBH; $10^2\leq M_ ...
Benjamin Lee Davis, A. Graham
semanticscholar +1 more source
Constraining a Companion of the Galactic Center Black Hole Sgr A*
The Astrophysical Journal, 2023 We use 23 yr of astrometric and radial velocity data on the orbit of the star S0-2 to constrain a hypothetical intermediate-mass black hole orbiting the massive black hole Sgr A* at the Galactic center.
Clifford M. Will +6 more
doaj +1 more source
Multi-Messenger Astrophysics of a Millisecond Pulsar Orbiting around a Massive Black Hole
Universe, 2022 Extreme-mass-ratio and intermediate-mass-ratio binaries with a millisecond pulsar are gravitational-wave sources that emit also electromagnetic radiation.
Kinwah Wu
doaj +1 more source
Constraints on Galactic intermediate mass black holes [PDF]
Monthly Notices of the Royal Astronomical Society, 2006 Intermediate Mass Black Holes (IMBHs; 10^1.3-5 M_sun) are thought to form as relics of Population III stars or from the runaway collapse of stars in young clusters; their number and very existence are uncertain. We ran N-body simulations of Galactic IMBHs, modelling them as a halo population distributed according to a Navarro, Frenk & White (NFW ...
Mapelli, M., FERRARA, ANDREA, Rea, N.
openaire +3 more sources
Intermediate-mass black holes in galactic nuclei [PDF]
Proceedings of the International Astronomical Union, 2004 We present the first homogeneous sample of intermediate-mass black hole candidates in active galactic nuclei. Starting with broad-line active nuclei from the Sloan Digital Sky Survey, we use the linewidth-luminosity-mass scaling relation to select a sample of 19 galaxies in the mass range M_BH ~ 8 x 10^4 - 10^6 solar masses.
Greene, Jenny E. +2 more
openaire +4 more sources
The fast, luminous ultraviolet transient AT2018cow: extreme supernova, or disruption of a star by an intermediate-mass black hole? [PDF]
Monthly notices of the Royal Astronomical Society, 2018 Wide-field optical surveys have begun to uncover large samples of fast (t_rise 10 days. The spectrum remains extremely hot throughout its evolution, and the photospheric radius contracts with time (receding below ...
D. Perley +62 more
semanticscholar +1 more source
Simulating the growth of intermediate-mass black holes [PDF]
Monthly Notices of the Royal Astronomical Society, 2015 Accepted for publication in ...
Fabio Pacucci, Andrea Ferrara
openaire +3 more sources
Semiclassical S $$ \mathcal{S} $$ -matrix and black hole entropy in dilaton gravity
Journal of High Energy Physics, 2020 We use complex semiclassical method to compute scattering amplitudes of a point particle in dilaton gravity with a boundary. This model has nonzero minimal black hole mass M cr . We find that at energies below M cr the particle trivially scatters off the
Maxim Fitkevich +2 more
doaj +1 more source
Mechanism for the suppression of intermediate-mass black holes [PDF]
Astronomy Letters, 2010 A model for the formation of supermassive primordial black holes in galactic nuclei with the simultaneous suppression of the formation of intermediate-mass black holes is presented. A bimodal mass function for black holes formed through phase transitions in a model with a "Mexican hat" potential has been found.
Yu. N. Eroshenko +3 more
openaire +3 more sources