Results 21 to 30 of about 188,688 (350)
A near horizon extreme binary black hole geometry
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
Relativistic Suppression of Black Hole Recoils [PDF]
Numerical-relativity simulations indicate that the black hole produced in a binary merger can recoil with a velocity up to v_max ~ 4,000 km/s with respect to the center of mass of the initial binary.
Baker +20 more
core +2 more sources
Flip-Flopping Binary Black Holes
We study binary spinning black holes to display the long term individual spin dynamics. We perform a full numerical simulation starting at an initial proper separation of $d\approx25M$ between equal mass holes and evolve them down to merger for nearly 48 orbits, 3 precession cycles, and half of a flip-flop cycle. The simulation lasts for $t=20000M$ and
Lousto, Carlos O., Healy, James
openaire +4 more sources
Black hole spins in coalescing binary black holes [PDF]
18 pages, 11 figures, accepted to MNRAS after taking into account star-formation rate history for comparison of the calculated BH-BH coalescences with observed systems, LIGO/Virgo GWTC-1 sources ...
K A Postnov, A G Kuranov
openaire +3 more sources
The LISA-Taiji Network: Precision Localization of Coalescing Massive Black Hole Binaries
We explore a potential LISA-Taiji network to fast and accurately localize the coalescing massive black hole binaries. For an equal-mass binary located at redshift of 1 with a total intrinsic mass of 105M⊙, the LISA-Taiji network may achieve almost four ...
Wen-Hong Ruan +4 more
doaj +1 more source
Can We Prescribe the Physical Parameters of Multiple Black Holes?
The parabolic-hyperbolic form of the constraints and superposed Kerr-Schild black holes have already been used to provide a radically new initialization of binary black hole configurations.
István Rácz
doaj +1 more source
LIGO GW150914 and GW151226 gravitational wave detection and generalized gravitation theory (MOG)
The nature of gravitational waves in a generalized gravitation theory is investigated. The linearized field equations and the metric tensor quadrupole moment power and the decrease in radius of an inspiralling binary system of two compact objects are ...
J.W. Moffat
doaj +1 more source
Integral Fluxes of Neutrinos and Gamma-Rays Emitted from Neighboring X-ray Binaries
Astrophysical plasma ejections (jets) are formed and powered by black holes that accrete material from their companion star in binary systems. Black hole X-ray binary systems constitute potential powerful galactic and extragalactic neutrino and gamma-ray
Odysseas Kosmas +2 more
doaj +1 more source
Tracing Black Hole Signatures in Several Black Hole Candidates Based on Their X-Ray Spectral Evolution [PDF]
Investigation of spectral evolution of four black hole candidates was carried out by using color-color diagram as well as spectral fitting on Swift/XRT data.
Alfarizki Fahmi Iman, Vierdayanti Kiki
doaj +1 more source
59 pages, 18 figures; to appear as Chapter 4 in "Compact Stellar X-ray Sources," eds. W.H.G. Lewin and M. van der Klis, Cambridge University Press. This is the final version as submitted for publication. Small corrections and additions have been made to Tables 4.1 and 4.2, Figures 4.13 and 4.17, and at a few places in the ...
McClintock, Jeffrey E. +1 more
openaire +2 more sources

