科研之友
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摘要
Ground-based gravitational wave detectors are sensitive to a narrow range of frequencies, effectively taking a snapshot of merging compact-object binary dynamics just before merger. We demonstrate that by adopting analysis parameters that naturally characterize this "picture," the physical parameters of the system can be extracted more efficiently from the gravitational wave data and interpreted more easily. We assess the performance of Markov chain Monte Carlo parameter estimation in this physically intuitive coordinate system, defined by (a) a frame anchored on the binary's spins and orbital angular momentum and (b) a time at which the detectors are most sensitive to the binary's gravitational wave emission. Using anticipated noise curves for the advanced-generation LIGO and Virgo gravitational wave detectors, we find that this careful choice of reference frame and reference time significantly improves parameter estimation efficiency for binary neutron stars, neutron star-black hole, and binary black hole signals.
- 出版日期2014-7-7
- 单位西北大学
