7 papers
Grazing Collisions of Black Holes via the Excision of Singularities
Steve Brandt, Randall Correll, Roberto Gomez +10
We present the first simulations of non-headon (grazing) collisions of binary black holes in which the black hole singularities have been excised from the computational domain. Ini…
The close-limit approximation to Neutron Star Collisions
G. D. Allen, N. Andersson, K. D. Kokkotas +3
We develop a close-limit approximation to the head-on collision of two neutron stars similar to that used to treat the merger of black hole binaries . This approximation can serve…
Colliding black holes: how far can the close approximation go?
Reinaldo Gleiser, Oscar Nicasio, Richard Price +1
We study the head-on collision of two equal-mass momentarily stationary black holes, using black hole perturbation theory up to second order. Compared to first-order results, this…
Head-on collision of two black holes: comparison of different approaches
Peter Anninos, Richard H. Price, Jorge Pullin +2
A benchmark problem for numerical relativity has been the head-on collision of two black holes starting from the ``Misner initial data,'' a closed form momentarily stationary solut…
Bianchi Cosmologies: New Variables and a Hidden Supersymmetry
Octavio Obregon, Jorge Pullin, Michael P. Ryan
We find a supersymmetrization of the Bianchi IX cosmology in terms of Ashtekar's new variables. This provides a framework for connecting the recent results of Graham and those of R…
The Escape of Gravitational Radiation from the Field of Massive Bodies
Richard H. Price, Jorge Pullin, Prasun Kundu
We consider a compact source of gravitational waves of frequency , in or near a massive spherically symmetric distribution of matter or a black hole. Recent calculations have le…