Results 41 to 50 of about 94,165 (223)
Gauge drivers for the generalized harmonic Einstein equations [PDF]
, 2008 The generalized harmonic representation of Einstein's equations is manifestly hyperbolic for a large class of gauge conditions. Unfortunately most of the useful gauges developed over the past several decades by the numerical relativity community are ...
Lindblom, Lee +3 more
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Modeling the source of GW150914 with targeted numerical-relativity simulations [PDF]
, 2016 In fall of 2015, the two LIGO detectors measured the gravitational wave signal GW150914, which originated from a pair of merging black holes. In the final 0.2 seconds (about 8 gravitational-wave cycles) before the amplitude reached its maximum, the ...
Boyle, Michael +13 more
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A Radiation Scalar for Numerical Relativity [PDF]
Physical Review Letters, 2002 This letter describes a scalar curvature invariant for general relativity with a certain, distinctive feature. While many such invariants exist, this one vanishes in regions of space-time which can be said unambiguously to contain no gravitational radiation.
Beetle, Christopher, Burko, Lior M.
openaire +4 more sources
The 3+1 formalism in teleparallel and symmetric teleparallel gravity
European Physical Journal C: Particles and Fields, 2021 Teleparallel and symmetric teleparallel gravity offer platforms in which gravity can be formulated in interesting geometric approaches, respectively given by torsion and nonmetricity. In this vein, general relativity can be expressed in three dynamically
Salvatore Capozziello +3 more
doaj +1 more source
Higher dimensional Numerical Relativity: code comparison [PDF]
, 2014 The nonlinear behavior of higher dimensional black hole spacetimes is of interest in several contexts, ranging from an understanding of cosmic censorship to black hole production in high-energy collisions.
Cardoso, Vitor +7 more
core +3 more sources
Galaxies, 2019 In this review a summary is given on recent theoretical work, on understanding accreting supermassive black hole binaries in the gravitational wave (GW)-driven regime. A particular focus is given to theoretical predictions of properties of disks and jets
Roman Gold
doaj +1 more source
A Brief Overview of Black Hole-Neutron Star Mergers
Frontiers in Astronomy and Space Sciences, 2020 Of the three main types of binaries detectable through ground-based gravitational wave observations, black hole-neutron star (BHNS) mergers remain the most elusive.
Francois Foucart
doaj +1 more source
Universe, 2021 Ringdown gravitational waves of compact object binaries observed by ground-based gravitational-wave detectors encapsulate rich information to understand remnant objects after the merger and to test general relativity in the strong field. In this work, we
Norichika Sago +2 more
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Enriching the Symphony of Gravitational Waves from Binary Black Holes by Tuning Higher Harmonics
, 2018 For the first time, we construct an inspiral-merger-ringdown waveform model within the effective-one-body formalism for spinning, nonprecessing binary black holes that includes gravitational modes beyond the dominant $(\ell,|m|) = (2,2)$ mode ...
Bohé, Alejandro +5 more
core +1 more source
A new dissipation term for finite-difference simulations in Relativity
, 2007 We present a new numerical dissipation algorithm, which can be efficiently used in combination with centered finite-difference methods. We start from a formulation of centered finite-volume methods for Numerical Relativity, in which third-order space ...
Alcubierre +6 more
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