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LIGO observatories in Livingston, LA and Hanford, WA may detect gravitationalwaves emitted from coalescing binary systems composed of two compact objects.In order to detect compact binary coalescence (CBC) events, LIGO searchesutilize matched filtering techniques. Matched filtering is the optimaldetection strategy for stationary, Gaussian noise, however, LIGO noise is oftennon-stationary, non-Gaussian. Non-stationary noise result in an excess of falsecandidate events, commonly known as false alarms. This thesis develops the r^2test to reduce the false alarm rate for LIGO CBC searches. Results of thesearch for primordial black hole binary systems (where each object has lessthan 1M_solar), in LIGO's Third Science Run (S3) is also presented.  Results of the r^2 test are shown for several LIGO CBC searches, includingthe binary neutron star searches in the Third and Fourth Science Runs (S3/S4),the S3/S4 primordial black hole searches, and the binary black hole search inthe first three months of the Fifth Science Run (S5). The r^2 testsignificantly reduces the false alarm rate in these searches, while onlyfalsely dismissing a small fraction of simulated events.

Reducing False Alarms in Searches for Gravitational Waves from Coalescing Binary Systems