2010

Discriminating between a Stochastic Gravitational Wave Background and Instrument Noise

Adams, Matthew R., Cornish, Neil J.

Understand

The detection of a stochastic background of gravitational waves could significantly impact our understanding of the physical processes that shaped the early Universe.

The challenge lies in separating the cosmological signal from other stochastic processes such as instrument noise and astrophysical foregrounds.
One approach is to build two or more detectors and cross correlate their output, thereby enhancing the common gravitational wave signal relative to the uncorrelated instrument noise.
When only one detector is available, as will likely be the case with the Laser Interferometer Space Antenna (LISA), alternative analysis techniques must be developed.

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