Gravitational Wave Bursts from Collisions of Primordial Black Holes in Clusters
, 2010 The rate of gravitational wave bursts from the mergers of massive primordial black holes in clusters is calculated. Such clusters of black holes can be formed through phase transitions in the early Universe.
A. Cattaneo +15 more
core +1 more source
On the relation between the mass of Compact Massive Objects and their host galaxies [PDF]
, 2017 Supermassive black holes and/or very dense stellar clusters are found in the central regions of galaxies. Nuclear star clusters are present mainly in faint galaxies while upermassive black holes are common in galaxies with masses $\geq 10^{10}$ M$_\odot $
Binghua Jiao (158407) +6 more
core +4 more sources
On the location of the supermassive black hole in CTA 102 [PDF]
Astronomy & Astrophysics, 2015 Relativistic jets in active galactic nuclei represent one of the most powerful phenomena in the Universe. They form in the surroundings of the supermassive black holes as a by-product of accretion onto the central black hole in active galaxies. The flow in the jets propagates at velocities close to the speed of light.
J. Anton Zensus +6 more
openaire +6 more sources
THE SINFONI BLACK HOLE SURVEY: THE BLACK HOLE FUNDAMENTAL PLANE REVISITED AND THE PATHS OF (CO)EVOLUTION OF SUPERMASSIVE BLACK HOLES AND BULGES [PDF]
, 2016 We investigate the correlations between the black hole (BH) mass MBH, the velocity dispersion σ, the bulge mass MBu, the bulge average spherical density &rgr; h ?> , and its spherical half-mass radius rh, constructing a database of 97 galaxies (31 core ...
R. Saglia +9 more
semanticscholar +1 more source
Possible Effects of a Cosmological Constant on Black Hole Evolution [PDF]
, 1999 We explore possible effects of vacuum energy on the evolution of black holes. If the universe contains a cosmological constant, and if black holes can absorb energy from the vacuum, then black hole evaporation could be greatly suppressed.
Adams +8 more
core +2 more sources
M87 Supermassive Black Hole Review
International Journal of Science and Research (IJSR), 2021 M87 is a giant elliptical galaxy in the Virgo cluster of galaxies. The radio source has a core which coincides with the nucleus of the galaxy and a jet of emission which is detected from radio to X-ray bands. A supermassive black hole is assumed to be at the centre of M87 which sends out relativistic particles in the form jets along its axis of ...
openaire +2 more sources
Meet the Parents: The Progenitor Binary for the Supermassive Black Hole Candidate in E1821+643
The Astrophysical Journal Letters, 2023 The remnants of binary black hole mergers can be given recoil kick velocities up to 5000 km s ^−1 due to anisotropic emission of gravitational waves. E1821+643 is a recoiling supermassive black hole candidate with spectroscopically offset, broad emission
James Paynter, Eric Thrane
doaj +1 more source
Massive and supermassive black holes in the contemporary and early Universe and problems in cosmology and astrophysics [PDF]
, 2017 We discuss recent astronomical data showing that the role of massive primordial black holes in the Universe is much more significant than previously thought, both for the present Universe and for redshifts of the order of 10.
A. Dolgov
semanticscholar +1 more source
The Formation and Evolution of the First Massive Black Holes
, 2004 The first massive astrophysical black holes likely formed at high redshifts (z>10) at the centers of low mass (~10^6 Msun) dark matter concentrations.
A Cattaneo +214 more
core +1 more source
Kretschmann Scalar for a Kerr-Newman Black Hole [PDF]
, 1999 I have derived the Kretschmann scalar for a general black hole of mass m, angular momentum per unit mass a, and electric charge Q. The Kretschmann scalar gives the amount of curvature of spacetime, as a function of position near (and within) a black hole.
Henry, Richard C.
core +3 more sources