Authors: John T. Whelan, Reinhard Prix, Deepak Khurana
Date: 26 Aug 2009
Abstract: We describe the application of an F-statistic search for continuous gravitational waves to the search for galactic white-dwarf binaries in the Second Mock LISA Data Challenge. The search method employs a hierarchical template-grid based exploration of the parameter space, using a coincidence step to distinguish between primary ("true") and secondary maxima, followed by a final (multi-TDI) "zoom" stage to provide an accurate parameter estimation of the final candidates. Suitably tuned, the pipeline is able to extract 1989 true signals with only 5 false alarms. The use of the rigid adiabatic approximation allows recovery of signal parameters comparable to statistical expectations, although there is still some systematic excess above expected statistical errors due to Gaussian noise. An experimental iterative pipeline with seven rounds of subtraction and re-analysis allows us to increase the number of signals recovered, up to a total of 3419 with 29 false alarms.
© M. Vallisneri 2012 — last modified on 2010/01/29
Tantum in modicis, quantum in maximis