Physics
Scientific paper
Mar 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aps..apr.q8006l&link_type=abstract
American Physical Society, APS April Meeting 2012, March 31-Apr 3, 2012, abstract #Q8.006
Physics
Scientific paper
There is a significant possibility that nearly extremal black holes (i.e., holes spinning nearly as rapidly as possible) exist and thus are among the compact-binary mergers that could be observed by Advanced LIGO. Numerical-relativity simulations of merging compact objects---necessary for predicting the gravitational waveforms that Advanced LIGO could detect---are particularly challenging when they contain nearly extremal black-hole spins. In this talk, I will discuss results from recent simulations [performed using the SpEC code (black-holes.org/SpEC)] that contain nearly extremal black holes, including a simulation of merging black holes with the highest spins (and among the most gravitational-wave cycles) simulated to date. In particular, I will compare the numerical gravitational waveforms and the holes' masses and spins with analytic predictions. I will also discuss the behavior of the strongly warped spacetime near the holes' horizons.
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