Results 21 to 30 of about 170,936 (294)

Black hole/pulsar binaries in the Galaxy [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society: Letters, 2018
ABSTRACT We have performed population synthesis calculation on the formation of binaries containing a black hole (BH) and a neutron star (NS) in the Galactic disc. Some of important input parameters, especially for the treatment of common envelope evolution, are updated in the calculation.
Shao, Yong, Li, Xiang-Dong
openaire   +2 more sources

Coalescence of Kerr Black Holes—Binary Systems from GW150914 to GW170814

open access: yesEntropy, 2019
We investigate the energy of the gravitational wave from a binary black hole merger by the coalescence of two Kerr black holes with an orbital angular momentum.
Bogeun Gwak
doaj   +1 more source

Meet the Parents: The Progenitor Binary for the Supermassive Black Hole Candidate in E1821+643

open access: yesThe 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

Binary black hole in a double magnetic monopole field

open access: yesEuropean Physical Journal C: Particles and Fields, 2018
Ambient magnetic fields are thought to play a critical role in black hole jet formation. Furthermore, dual electromagnetic signals could be produced during the inspiral and merger of binary black hole systems.
Maria J. Rodriguez
doaj   +1 more source

Inferences about supernova physics from gravitational-wave measurements: GW151226 spin misalignment as an indicator of strong black-hole natal kicks [PDF]

open access: yes, 2017
The inferred parameters of the binary black hole GW151226 are consistent with nonzero spin for the most massive black hole, misaligned from the binary's orbital angular momentum.
Gerosa, Davide   +2 more
core   +3 more sources

Black hole binary dynamics [PDF]

open access: yesAstrophysics and Space Science, 2003
We discuss a new N-body simulation method for studying black hole binary dynamics. This method avoids previous numerical problems due to large mass ratios and trapped orbits with short periods. A treatment of relativistic effects is included when the associated time-scale becomes small.
openaire   +2 more sources

A near horizon extreme binary black hole geometry

open access: yesEuropean Physical Journal C: Particles and Fields, 2019
A new solution of four-dimensional vacuum General Relativity is presented. It describes the near horizon region of the extreme (maximally spinning) binary black hole system with two identical extreme Kerr black holes held in equilibrium by a massless ...
Jacob Ciafre, Maria J. Rodriguez
doaj   +1 more source

Foundations of multiple black hole evolutions [PDF]

open access: yes, 2008
We present techniques for long-term, stable, and accurate evolutions of multiple-black-hole spacetimes using the `moving puncture' approach with fourth- and eighth-order finite difference stencils.
Carlos O. Lousto   +4 more
core   +3 more sources

Inventory of black hole binaries [PDF]

open access: yesSymposium - International Astronomical Union, 2003
A small group of X-ray binaries currently provides the best evidence for the existence of stellar-mass black holes. These objects are interacting binary systems where the X-rays arise from accretion of material onto a compact object (i.e., an object with a radius of less than a few hundred km). In some favourable cases, optical studies of the companion
openaire   +2 more sources

Boosted three-dimensional black-hole evolutions with singularity excision [PDF]

open access: yes, 1997
Binary black hole interactions provide potentially the strongest source of gravitational radiation for detectors currently under development. We present some results from the Binary Black Hole Grand Challenge Alliance three- dimensional Cauchy evolution ...
A. Anderson   +57 more
core   +3 more sources

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