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A simulation of the laser interferometer space antenna data stream from galactic white dwarf binaries

M J Benacquista, J DeGoes and D Lunder

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Gravitational radiation from the galactic population of white dwarf binaries is expected to produce a background signal in the laser interferometer space antenna (LISA) frequency band. At frequencies below 1 mHz, this signal is expected to be confusion limited and has been approximated as Gaussian noise. At frequencies above about 5 mHz, the signal will consist of separable individual sources. We have produced a simulation of the LISA data stream from a population of 90k galactic binaries in the frequency range between 1 and 5 mHz. This signal is compared with the simulated signal from globular cluster populations of binaries. Notable features of the simulation as well as potential data analysis schemes for extracting information are presented.


PACS

04.30.-w Gravitational waves

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

04.80.Nn Gravitational wave detectors and experiments

97.80.Fk Spectroscopic binaries; close binaries

95.75.Kk Interferometry

MSC

83C35 Gravitational waves

Subjects

Instrumentation and measurement

Gravitation and cosmology

Astrophysics and astroparticles

Dates

Issue 5 (7 March 2004)

Received 13 August 2003

Published 5 February 2004



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