164 citations · 623 across the 11 of their papers we have counts for
11 papers
A new public code for initial data of unequal-mass, spinning compact-object binaries
L. Jens Papenfort, Samuel D. Tootle, Philippe Grandclément +2
The construction of constraint-satisfying initial data is an essential element for the numerical exploration of the dynamics of compact-object binaries. While several codes have be…
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…
Comparing timelike geodesics around a Kerr black hole and a boson star
M. Grould, Z. Meliani, F. H. Vincent +2
The second-generation beam combiner at the Very Large Telescope (VLT), GRAVITY, observes the stars orbiting the compact object located at the center of our galaxy, with an unpreced…
Gravitational geons in asymptotically anti-de Sitter spacetimes
Grégoire Martinon, Gyula Fodor, Philippe Grandclément +1
We report on numerical constructions of fully non-linear geons in asymptotically anti-de Sitter (AdS) spacetimes in four dimensions. Our approach is based on 3+1 formalism and spec…
Light rings and light points of boson stars
Philippe Grandclément
This work is devoted to the study of photon trajectories around rotating boson stars. The basic properties of boson star models are given with a particular emphasis on the high com…
Circular geodesics and thick tori around rotating boson stars
Z. Meliani, F. H. Vincent, P. Grandclément +3
Accretion disks play an important role in the evolution of their relativistic inner compact objects. The emergence of a new generation of interferometers will allow to resolve thes…
Self-gravitating scalar breathers with negative cosmological constant
Gyula Fodor, Péter Forgács, Philippe Grandclément
Breather-type (time-periodic and spatially localized) solutions with spherical symmetry are investigated in a massless scalar field theory coupled to Einstein's gravity with cosmol…
Scalar field breathers on anti-de Sitter background
Gyula Fodor, Péter Forgács, Philippe Grandclément
We study spatially localized, time-periodic solutions (breathers) of scalar field theories with various self-interacting potentials on Anti-de Sitter (AdS) spacetimes in dimens…
Oscillons and Quasi-breathers in the ϕ^4 Klein-Gordon model
Gyula Fodor, Péter Forgács, Philippe Grandclément +1
Strong numerical evidence is presented for the existence of a continuous family of time-periodic solutions with ``weak'' spatial localization of the spherically symmetric non-linea…
Mergers of Irrotational Neutron Star Binaries in Conformally Flat Gravity
Joshua A. Faber, Philippe Grandclément, Frederic A. Rasio
We present the first results from our new general relativistic, Lagrangian hydrodynamics code, which treats gravity in the conformally flat (CF) limit. The evolution of fluid confi…
Binary black holes in circular orbits. II. Numerical methods and first results
Philippe Grandclément, Eric Gourgoulhon, Silvano Bonazzola
We present the first results from a new method for computing spacetimes representing corotating binary black holes in circular orbits. The method is based on the assumption of exac…