Spectral filtering for hierarchical search of periodic sources

Details Spectral filtering for hierarchical search of periodic sources Spectral filtering for hierarchical search of periodic sources

Oct 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004cqgra..21s1645f&link_type=abstract

Classical and Quantum Gravity, Volume 21, Issue 20, pp. S1645-S1654 (2004).

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The search for periodic sources of gravitational waves is a heavy task from the computational point of view, and optimal methods cannot be applied for wide-area searches. Non-optimal, hierarchical methods have been developed and are based on alternating coherent and incoherent steps. In this paper we discuss the spread of the spectral signal power due to the Earth's rotation. It affects the signal-to-noise ratio in the second, coherent, step of the analysis and a way to take this into account is outlined. Moreover, a new method for the hierarchical data analysis procedure is described.

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