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Improved search for galactic white-dwarf binaries in Mock LISA Data Challenge 1B using an {\cal F} -statistic template bank

John T Whelan1, Reinhard Prix2 and Deepak Khurana3

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We report on our {\cal F} -statistic search for white-dwarf binary signals in the Mock LISA Data Challenge 1B (MLDC1B). We focus in particular on the improvements in our search pipeline since MLDC1, namely refinements in the search pipeline and the use of a more accurate detector response (rigid adiabatic approximation). 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.


PACS

95.55.Ym Gravitational radiation detectors; mass spectrometers; and other instrumentation and techniques

97.20.Rp Faint blue stars (including blue stragglers), white dwarfs, degenerate stars, nuclei of planetary nebulae

97.80.-d Binary and multiple stars

97.10.Yp Star counts, distribution, and statistics

MSC

85A15 Galactic and stellar structure

85A35 Statistical astronomy

83C35 Gravitational waves

Subjects

Instrumentation and measurement

Gravitation and cosmology

Astrophysics and astroparticles

Dates

Issue 18 (21 September 2008)

Received 20 April 2008, in final form 30 July 2008

Published 2 September 2008



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