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Spurious acceleration noise in spaceborne gravitational wave interferometers

Patricia Purdue1 and Shane L Larson2

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An important source of noise in the Laser Interferometer Space Antenna (LISA) is residual acceleration on the proof masses at the heart of the interferometer system. Two proof masses are carried by each sciencecraft in the LISA constellation, oriented along each of two laser links that are maintained between the distant partners in the constellation. Any change in the local mass distribution will create spurious forces on the individual proof masses which will have to be understood as part of the data analysis reduction. This paper considers the general case of accelerations on the individual proof masses in three dimensions for perturbing masses passing by a LISA sciencecraft with arbitrary velocity vectors and impact parameters. Encounters of this kind are impulsive, occurring over short time scales and appearing in the data record as bursts. The formalism is then applied in a few sample cases, including a meteor fly-by and a thruster maneuver.


PACS

04.80.Nn Gravitational wave detectors and experiments

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

07.60.Ly Interferometers

07.05.Kf Data analysis: algorithms and implementation; data management

MSC

83C35 Gravitational waves

78A60 Lasers, masers, optical bistability, nonlinear optics (See also 81V80)

Subjects

Instrumentation and measurement

Gravitation and cosmology

Astrophysics and astroparticles

Dates

Issue 23 (7 December 2007)

Received 1 July 2007, in final form 6 September 2007

Published 21 November 2007



  1. Spurious acceleration noise in spaceborne gravitational wave interferometers

    Patricia Purdue and Shane L Larson 2007 Class. Quantum Grav. 24 5869

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