Observational analysis finds an upper rate limit on coalescing binary neutron stars in the Galaxy, highlighting matched filtering efficacy for large-scale interferometers.
Using optimal matched filtering, we search 25 hours of data from the LIGO 40-m prototype laser interferometric gravitational-wave detector for gravitational-wave chirps emitted by coalescing binary systems within our Galaxy. This is the first test of this filtering technique on real interferometric data. An upper limit on the rate R of neutron star binary inspirals in our Galaxy is obtained: with $90%$ confidence, R<0.5h^-1. Similar experiments with LIGO interferometers will provide constraints on the population of tight binary neutron star systems in the Universe.
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Allen et al. (1999) studied this question.
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