742 citations · 2.9k across the 34 of their papers we have counts for
34 papers
Horizon Multipole Moments of a Kerr Black Hole
Eric Gourgoulhon, Alexandre Le Tiec, Marc Casals
The horizon multipole moments of a Kerr black hole are computed from two distinct definitions that have been proposed in the literature. The first one [Ashtekar et al., Class. Quan…
First Law of Mechanics for Spinning Compact Binaries: Dipolar Order
Paul Ramond, Alexandre Le Tiec
Building upon the Noether charge formalism of Iyer and Wald, we derive a variational formula for spacetimes admitting a Killing vector field, for a generic energy-momentum distribu…
Gravitational waveforms for compact binaries from second-order self-force theory
Barry Wardell, Adam Pound, Niels Warburton +3
We produce gravitational waveforms for nonspinning compact binaries undergoing a quasicircular inspiral. Our approach is based on a two-timescale expansion of the Einstein equation…
Tidal Love Numbers of Kerr Black Holes
Alexandre Le Tiec, Marc Casals, Edgardo Franzin
The open question of whether a Kerr black hole can become tidally deformed or not has profound implications for fundamental physics and gravitational-wave astronomy. We consider a…
Spinning Black Holes Fall in Love
Alexandre Le Tiec, Marc Casals
The open question of whether a black hole can become tidally deformed by an external gravitational field has profound implications for fundamental physics, astrophysics and gravita…
Multipolar Particles in Helically Symmetric Spacetimes
Paul Ramond, Alexandre Le Tiec
We consider a binary system of spinning compact objects with internal structure, moving along an exactly circular orbit, and modelled within the multipolar gravitational skeleton f…
SAGE: using CubeSats for Gravitational Wave Detection
S. Lacour, M. Nowak, P. Bourget +7
SAGE (SagnAc interferometer for Gravitational wavE) is a fast track project for a space observatory based on multiple 12-U CubeSats in geostationary orbit. The objective of this pr…
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-…
Horizon Surface Gravity in Corotating Black Hole Binaries
Alexandre Le Tiec, Philippe Grandclément
For binary systems of corotating black holes, the zeroth law of black hole mechanics states that the surface gravity is constant over each component of the horizon. Using the appro…
First Law of Compact Binary Mechanics with Gravitational-Wave Tails
Luc Blanchet, Alexandre Le Tiec
We derive the first law of binary point-particle mechanics for generic bound (i.e. eccentric) orbits at the fourth post-Newtonian (4PN) order, accounting for the non-locality in ti…
Hamiltonian Formulation of the Conservative Self-Force Dynamics in the Kerr Geometry
Ryuichi Fujita, Soichiro Isoyama, Alexandre Le Tiec +3
We formulate a Hamiltonian description of the orbital motion of a point particle in Kerr spacetime for generic (eccentric, inclined) orbits, which accounts for the effects of the c…
Theory of Gravitational Waves
Alexandre Le Tiec, Jérôme Novak
The existence of gravitational radiation is a natural prediction of any relativistic description of the gravitational interaction. In this chapter, we focus on gravitational waves,…
First Law of Mechanics for Compact Binaries on Eccentric Orbits
Alexandre Le Tiec
Using the canonical Arnowitt-Deser-Misner Hamiltonian formalism, a "first law of mechanics" is established for binary systems of point masses moving along generic stable bound (ecc…
The Overlap of Numerical Relativity, Perturbation Theory and Post-Newtonian Theory in the Binary Black Hole Problem
Alexandre Le Tiec
Inspiralling and coalescing binary black holes are promising sources of gravitational radiation. The orbital motion and gravitational-wave emission of such system can be modelled u…
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…
Dipolar Dark Matter and Cosmology
Luc Blanchet, David Langlois, Alexandre Le Tiec +1
The phenomenology of the modified Newtonian dynamics (MOND) can be recovered from a mechanism of "gravitational polarization" of some dipolar medium playing the role of dark matter…
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…
A Note on Celestial Mechanics in Kerr Spacetime
Alexandre Le Tiec
The Hamilton-Jacobi equation for test particles in the Kerr geometry is separable. Using action-angle variables, we establish several relations between various physical quantities…
Periastron Advance in Spinning Black Hole Binaries: Gravitational Self-Force from Numerical Relativity
Alexandre Le Tiec, Alessandra Buonanno, Abdul H. Mroué +8
We study the general relativistic periastron advance in spinning black hole binaries on quasi-circular orbits, with spins aligned or anti-aligned with the orbital angular momentum,…
First Law of Mechanics for Black Hole Binaries with Spins
Luc Blanchet, Alessandra Buonanno, Alexandre Le Tiec
We use the canonical Hamiltonian formalism to generalize to spinning point particles the first law of mechanics established for binary systems of non-spinning point masses moving o…
Thermodynamics of a Black Hole with Moon
Samuel E. Gralla, Alexandre Le Tiec
For a Kerr black hole perturbed by a particle on the "corotating" circular orbit (angular velocity equal to that of the unperturbed event horizon), the black hole remains in equili…
Non-Gaussianity in the Cosmic Microwave Background Induced by Dipolar Dark Matter
Luc Blanchet, David Langlois, Alexandre Le Tiec +1
In previous work [L. Blanchet and A. Le Tiec, Phys. Rev. D 80, 023524 (2009)], motivated by the phenomenology of dark matter at galactic scales, a model of dipolar dark matter (DDM…
Spacetime Symmetries and Kepler's Third Law
Alexandre Le Tiec
The curved spacetime geometry of a system of two point masses moving on a circular orbit has a helical symmetry. We show how Kepler's third law for circular motion, and its general…
The complete non-spinning effective-one-body metric at linear order in the mass ratio
Enrico Barausse, Alessandra Buonanno, Alexandre Le Tiec
Using the main result of a companion paper, in which the binding energy of a circular-orbit non-spinning compact binary system is computed at leading-order beyond the test-particle…