Characterizing the Galactic Gravitational Wave Background with LISA

Details Characterizing the Galactic Gravitational Wave Background with LISA Characterizing the Galactic Gravitational Wave Background with LISA

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aas...20512105r&link_type=abstract

American Astronomical Society Meeting 205, #121.05; Bulletin of the American Astronomical Society, Vol. 36, p.1550

Astronomy and Astrophysics

Astronomy

Scientific paper

Estimates of galactic binary populations suggest that inside the frequency band of the proposed Laser Interferometer Space Antenna (LISA) there will be a large number of gravitational wave sources. The superposition of these sources will form a confusion limited background over a portion of LISA's band. At high frequencies, where the number of sources per frequency bin is below one, individual binaries will be identified in the detector output. At low frequencies, where the number of sources per bin is much greater than one, a small fraction of the binaries will have a high signal-to-noise ratio relative to the background and, therefore, will also be individually identified.
In this talk we will present a Monte Carlo simulation of the galactic gravitational wave background as it will be detected by LISA. Using this simulation a number of characteristics associated with the background are calculated, including estimates of the number and type of binary sources LISA will be able to identify, and the average frequency separation between identified sources. We will also demonstration how a standard Gaussian test can be used to distinguish the galactic background from the intrinsic detector noise.

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