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All three LIGO gravitational wave detectors have reached their design sensitivities. A sky-averaged detection range (SNR > 8) of more than 15 Mpc for gravitational waves emitted from inspiral binary neutron stars with masses of 1.4 M⊙ has been achieved with the two 4 km instruments. The fifth LIGO science run started in November 2005 and ended in September 2007. A full year of triple coincidence data has been acquired. The duty cycle of a single instrument was between 66% and 79%. Results from previous science runs are presented.
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D. Sigg (2008) studied this question.
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