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LISA science results in the presence of data disturbances

Scott E Pollack

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Each spacecraft in the Laser Interferometer Space Antenna (LISA) houses a proof mass which follows a geodesic through spacetime. Disturbances which change the proof mass position, momentum and/or acceleration will appear in the LISA data stream as additive quadratic functions. These data disturbances inhibit signal extraction and must be removed. In this paper we discuss the identification and fitting of monochromatic signals in the data set in the presence of data disturbances. We also present a preliminary analysis of the extent of science result limitations with respect to the frequency of data disturbances.


PACS

04.80.Nn Gravitational wave detectors and experiments

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

95.75.Pq Mathematical procedures and computer techniques

MSC

83C75 Space-time singularities, cosmic censorship, etc.

83C35 Gravitational waves

Subjects

Instrumentation and measurement

Gravitation and cosmology

Astrophysics and astroparticles

Dates

Issue 14 (21 July 2004)

Received 4 March 2004

Published 21 June 2004



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