Statistics – Applications
Scientific paper
May 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aps..apr.j9006f&link_type=abstract
American Physical Society, April Meeting, 2004, May 1-4, 2004, Denver, Colorado April 2004, MEETING ID: APR04, abstract #J9.006
Statistics
Applications
Scientific paper
Gravitational radiation carries away linear momentum, imparting a ``kick'' to the center of mass of the radiating system. Using perturbation theory, we have calculated this effect for binary black holes in the extreme-mass-ratio limit. Our results are accurate for the slow, inspiral phase of coalescence, but less accurate for the final ``plunge''. Scaling relations are used to extrapolate our results to higher mass ratios. Relativistic effects reduce the kick velocity compared to previous quasi-Newtonian estimates. Over a wide range of black hole spins, we find that kick velocities of V ˜ 10-100 km/s are quite likely; V ˜ 200-300 km/s are not unexpected; and the largest recoils possible are probably < 500-600 km/s. These numbers are less than galactic escape speeds, but are comparable to the escape speeds of globular clusters and high redshift mini-halos. We will discuss our calculations of the kick velocity, its astrophysical applications, and future work.
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