Accurate time-domain gravitational waveforms for extreme-mass-ratio binariesL. M. Burko1 and G. Khanna2
1 Department of Physics and Center for Space Plasma and Aeronomic Research, University of Alabama in Huntsville Huntsville, AL 35899, USA
2 University of Massachusetts at Dartmouth - N. Dartmouth, MA 02747, USA
received 13 February 2007; accepted in final form 4 May 2007; published June 2007
published online 29 May 2007
The accuracy of time-domain solutions of the inhomogeneous Teukolsky equation is improved significantly. Comparing energy fluxes in gravitational waves with highly accurate frequency-domain results for circular equatorial orbits in Schwarzschild and Kerr, we find agreement to within 1% or better, which may be even further improved. We apply our method to orbits for which frequency-domain calculations have a relative disadvantage, specifically high-eccentricity (elliptical and parabolic) "zoom-whirl" orbits, and find the energy fluxes, waveforms, and characteristic strain in gravitational waves.
04.30.Db - Wave generation and sources.
04.25.-g - Approximation methods; equations of motion.
04.70.-s - Physics of black holes.
© Europhysics Letters Association 2007