Results 41 to 50 of about 664 (52)

A simple construction of initial data for multiple black holes

, 1997
We consider the initial data problem for several black holes in vacuum with arbitrary momenta and spins on a three space with punctures. We compactify the internal asymptotically flat regions to obtain a computational domain without inner boundaries ...
Brandt, Steven, Bruegmann, Bernd
core   +1 more source

Solving the Initial Value Problem of two Black Holes [PDF]

, 2000
We solve the elliptic equations associated with the Hamiltonian and momentum constraints, corresponding to a system composed of two black holes with arbitrary linear and angular momentum.
A. D. Kulkarni, A. Garat, G. B. Cook, G. B. Cook, J. W. York, N. T. Bishop, P. Marronetti, P. Marronetti, P. Marronetti, Pedro Marronetti, R. A. Matzner, Richard A. Matzner, S. Brandt, S. Brandt, T. W. Baumgarte   +14 more
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Influence of self-gravity on the runaway instability of black hole-torus systems

, 2010
Results from the first fully general relativistic numerical simulations in axisymmetry of a system formed by a black hole surrounded by a self-gravitating torus in equilibrium are presented, aiming to assess the influence of the torus self-gravity on the
F. Daigne, José A. Font, M. A. Abramowicz, Masaru Shibata, Pedro J. Montero, R. Khanna, S. Nishida   +6 more
core   +1 more source

Uniqueness and Non-uniqueness in the Einstein Constraints [PDF]

, 2003
The conformal thin sandwich (CTS) equations are a set of four of the Einstein equations, which generalize the Laplace-Poisson equation of Newton's theory.
Arand, M., Bergfors, T., Bont, J.A.M. de, Hallberg, B.M., Jones, T.A., Mowbray, S.L., Oesch, F., Werf, M.J. van der, Zou, J.   +8 more
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Formation of a rotating hole from a close limit head-on collision

, 1998
Realistic black hole collisions result in a rapidly rotating Kerr hole, but simulations to date have focused on nonrotating final holes. Using a new solution of the Einstein initial value equations we present here waveforms and radiation for an ...
A. Abrahams, A. M. Abrahams, C. W. Misner, E. T. Newman, E. W. Leaver, F. Zerilli, J. Baker, J. Bowen, J. Pullin, L. S. Finn, M. Campanelli, M. Campanelli, P. Anninos, R. H. Boyer, R. H. Price, Richard H. Price, S. A. Teukolsky, S. Chandrasekhar, S. Detweiler, S. R. Brandt, S. R. Brandt, S. R. Brandt, T. Regge, W. Krivan, W. Krivan, William Krivan, É. É. Flanagan   +26 more
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Accurate Evolutions of Orbiting Binary Black Holes [PDF]

, 2006
We present a detailed analysis of binary black hole evolutions in the last orbit and demonstrate consistent and convergent results for the trajectories of the individual bodies.
Diener, P., Herrmann, F., Pollney, D., Schnetter, E., Seidel, E., Takahashi, R., Thornburg, J., Ventrella, J.   +7 more
core  

The BSSN formulation is a partially constrained evolution system

, 2007
Relativistic simulations in 3+1 dimensions typically monitor the Hamiltonian and momentum constraints during evolution, with significant violations of these constraints indicating the presence of instabilities.
ADRIAN P. GENTLE, Anderson M., Pretorius F.   +2 more
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Negative Komar Mass of Single Objects in Regular, Asymptotically Flat Spacetimes

, 2006
We study two types of axially symmetric, stationary and asymptotically flat spacetimes using highly accurate numerical methods. The one type contains a black hole surrounded by a perfect fluid ring and the other a rigidly rotating disc of dust surrounded
Bardeen J M, Carter B, D Petroff, Kunz J Navarro-Lérida F, M Ansorg, Meinel R, Rueda J A, Szabados L B   +7 more
core   +1 more source

Gravitational waves from relativistic rotational core collapse

, 2001
We present results from simulations of axisymmetric relativistic rotational core collapse. The general relativistic hydrodynamic equations are formulated in flux-conservative form and solved using a high-resolution shock-capturing scheme.
Eriguchi Y., Ewald Müller, Harald Dimmelmeier, Janka H.-T., José A. Font, Komatsu H., Monchmeyer R., Rampp M., Thorne K., Zwerger T.   +9 more
core   +1 more source

Revised Relativistic Hydrodynamical Model for Neutron-Star Binaries

, 1999
We report on numerical results from a revised hydrodynamic simulation of binary neutron-star orbits near merger. We find that the correction recently identified by Flanagan significantly reduces but does not eliminate the neutron-star compression effect.
A. G. Wiseman, B. Link, D. Lai, D. Lai, E. Flanagan, E. Flanagan, F. Usui, G. J. Mathews, G. J. Mathews, G. J. Mathews, H. A. Bethe, J. C. Lombardi, J. R. Wilson, J. R. Wilson, J. R. Wilson, J. W. York, Jr., K. Taniguchi, K. Thorne, M. Shibata, M. Shibata, M. Shibata, P. Brady, P. Marronetti, S. Bonazzola, W. Ogawaguchi   +24 more
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