Mapping the gravitational wave background

Details Mapping the gravitational wave background Mapping the gravitational wave background

2001-05-22

arxiv.org/abs/astro-ph/0105374v1

Class.Quant.Grav. 18 (2001) 4277-4292

Astronomy and Astrophysics

Astrophysics

16 pages, 6 figures. Submitted to CQG

Scientific paper

10.1088/0264-9381/18/20/307

The gravitational wave sky is expected to have isolated bright sources superimposed on a diffuse gravitational wave background. The background radiation has two components: a confusion limited background from unresolved astrophysical sources; and a cosmological component formed during the birth of the universe. A map of the gravitational wave background can be made by sweeping a gravitational wave detector across the sky. The detector output is a complicated convolution of the sky luminosity distribution, the detector response function and the scan pattern. Here we study the general de-convolution problem, and show how LIGO (Laser Interferometric Gravitational Observatory) and LISA (Laser Interferometer Space Antenna) can be used to detect anisotropies in the gravitational wave background.

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