742 citations · 7.8k across the 77 of their papers we have counts for
72 papers · 1 filter
Time-domain framework for the Teukolsky equation with a particle source using comoving hyperboloidal coordinates
Aditya Vaswani, Leor Barack, Oliver Long +1
We present a scheme and implementation code for time-domain integration of the Teukolsky equation in 1+1 dimensions with a point-particle source, based on comoving, spatially compa…
Resummed energy loss in extreme-mass-ratio scattering using critical orbits
Leor Barack, Riccardo Gonzo, Benjamin Leather +2
Motivated by recent efforts to bridge between weak-field and strong-field descriptions of black-hole binary dynamics, we develop a resummation scheme for post-Minkowskian radiative…
Frequency-domain self-force calculations using Gegenbauer reconstruction
Christopher Whittall, Leor Barack, Oliver Long
We investigate the use of the Gegenbauer procedure for time-domain reconstruction in frequency-domain calculations of the self-force on a particle orbiting a black hole. The conven…
Effective source for second-order self-force calculations: quasicircular orbits in Schwarzschild spacetime
Samuel D. Upton, Barry Wardell, Adam Pound +2
Recent years have seen the first production of "post-adiabatic" gravitational-waveform models based on second-order gravitational self-force theory. These models rely on calculatio…
Relieving scale disparity in binary black hole simulations
Nikolas A. Wittek, Leor Barack, Harald P. Pfeiffer +7
Worldtube excision is a method of reducing computational burden in Numerical Relativity simulations of binary black holes in situations where there is a good analytical model of th…
Black hole scattering near the transition to plunge: Self-force and resummation of post-Minkowskian theory
Oliver Long, Christopher Whittall, Leor Barack
Geodesic scattering of a test particle off a Schwarzschild black hole can be parameterized by the speed-at-infinity and the impact parameter , with a "separatrix", $b=b_c(v)…
Worldtube excision method for intermediate-mass-ratio inspirals: self-consistent evolution in a scalar-charge model
Nikolas A. Wittek, Adam Pound, Harald P. Pfeiffer +1
This is a third installment in a program to develop a method for alleviating the scale disparity in binary black hole simulations with mass ratios in the intermediate astrophysical…
Waveform Modelling for the Laser Interferometer Space Antenna
LISA Consortium Waveform Working Group, Niayesh Afshordi, Sarp Akçay +144
LISA, the Laser Interferometer Space Antenna, will usher in a new era in gravitational-wave astronomy. As the first anticipated space-based gravitational-wave detector, it will exp…
Frequency-domain approach to self-force in hyperbolic scattering
Christopher Whittall, Leor Barack
We develop a frequency-domain method for calculating the self-force acting on a scalar charge on a fixed scattering geodesic in Schwarzschild spacetime. Existing frequency-domain m…
Worldtube excision method for intermediate-mass-ratio inspirals: scalar-field model in 3+1 dimensions
Nikolas A. Wittek, Mekhi Dhesi, Leor Barack +10
Binary black hole simulations become increasingly more computationally expensive with smaller mass ratios, partly because of the longer evolution time, and partly because the lengt…
Self-force correction to the deflection angle in black-hole scattering: a scalar charge toy model
Leor Barack, Oliver Long
Using self-force methods, we consider the hyperbolic-type scattering of a pointlike particle carrying a scalar charge off a Schwarzschild black hole. For given initial velocity…
Worldtube excision method for intermediate-mass-ratio inspirals: scalar-field toy model
Mekhi Dhesi, Hannes R. Rüter, Adam Pound +2
The computational cost of inspiral and merger simulations for black-hole binaries increases in inverse proportion to the square of the mass ratio . One factor of…
Time-domain metric reconstruction for hyperbolic scattering
Oliver Long, Leor Barack
Self-force methods can be applied in calculations of the scatter angle in two-body hyperbolic encounters, working order by order in the mass ratio (assumed small) but with no recou…
Self-force effects on the marginally bound zoom-whirl orbit in Schwarzschild spacetime
Leor Barack, Marta Colleoni, Thibault Damour +2
For a Schwarzchild black hole of mass , we consider a test particle falling from rest at infinity and becoming trapped, at late time, on the unstable circular orbit of radius $r…
Black holes, gravitational waves and fundamental physics: a roadmap
Leor Barack, Vitor Cardoso, Samaya Nissanke +203
The grand challenges of contemporary fundamental physics---dark matter, dark energy, vacuum energy, inflation and early universe cosmology, singularities and the hierarchy problem-…
Self-force and radiation reaction in general relativity
Leor Barack, Adam Pound
[Abridged] This review surveys the theory of gravitational self-force in curved spacetime and its application to the gravitational two-body problem in the extreme-mass-ratio regime…
Time-domain metric reconstruction for self-force applications
Leor Barack, Paco Giudice
We present a new method for calculation of the gravitational self-force (GSF) in Kerr geometry, based on a time-domain reconstruction of the metric perturbation from curvature scal…
Completion of metric reconstruction for a particle orbiting a Kerr black hole
Cesar Merlin, Amos Ori, Leor Barack +2
Vacuum perturbations of the Kerr metric can be reconstructed from the corresponding perturbation in either of the two Weyl scalars or , using a procedure described by Ch…
Self-force as a cosmic censor in the Kerr overspinning problem
Marta Colleoni, Leor Barack, Abhay G. Shah +1
It is known that a near-extremal Kerr black hole can be spun up beyond its extremal limit by capturing a test particle. Here we show that overspinning is always averted once back-r…
Comparison Between Self-Force and Post-Newtonian Dynamics: Beyond Circular Orbits
Sarp Akcay, Alexandre Le Tiec, Leor Barack +2
The gravitational self-force (GSF) and post-Newtonian (PN) schemes are complementary approximation methods for modelling the dynamics of compact binary systems. Comparison of their…
Overspinning a Kerr black hole: the effect of self-force
Marta Colleoni, Leor Barack
We study the scenario in which a massive particle is thrown into a rapidly rotating Kerr black hole in an attempt to spin it up beyond its extremal limit, challenging weak cosmic c…
Gravitational Self-Force Correction to the Innermost Stable Circular Equatorial Orbit of a Kerr Black Hole
Soichiro Isoyama, Leor Barack, Sam R. Dolan +5
For a self-gravitating particle of mass μin orbit around a Kerr black hole of mass M >> μ, we compute the O(μ/M) shift in the frequency of the innermost stable circular equatorial…
Gravitational self-torque and spin precession in compact binaries
Sam R. Dolan, Niels Warburton, Abraham I. Harte +3
We calculate the effect of self-interaction on the "geodetic" spin precession of a compact body in a strong-field orbit around a black hole. Specifically, we consider the spin prec…
Gravitational self-force from radiation-gauge metric perturbations
Adam Pound, Cesar Merlin, Leor Barack
Calculations of the gravitational self-force (GSF) in curved spacetime require as input the metric perturbation in a sufficiently regular gauge. A basic challenge in the program to…