[0906.0023] Exploiting global correlations to detect continuous gravitational waves

Authors: Holger J. Pletsch, Bruce Allen

Date: 31 May 2009

Abstract: Fully coherent searches (over realistic ranges of parameter space and year-long observation times) for unknown sources of continuous gravitational waves are computationally prohibitive. Less expensive hierarchical searches divide the data into shorter segments which are analyzed coherently, then detection statistics from different segments are combined incoherently. Here, we present an improved method for the incoherent step, the Global Correlation Transform (GCT), which exploits global parameter-space correlations in the coherent detection statistic. Application to simulated data shows significant sensitivity improvements compared with previously available methods, increasing the spatial volume probed by more than two orders of magnitude at lower computational cost.

abs pdf

Jun 07, 2009

0906.0023 (/preprints)
2009-06-07, 09:59 [edit]

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