Upper Limit Map of a Stochastic Background of Gravitational Waves

Details Upper Limit Map of a Stochastic Background of Gravitational Waves Upper Limit Map of a Stochastic Background of Gravitational Waves

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...209.5306b&link_type=abstract

2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #53.06; Bulletin of the American Astronomical Society, V

Astronomy and Astrophysics

Astrophysics

Scientific paper

Data from the LIGO S4 science run was analyzed for an anisotropic background of gravitational waves using a method that is optimized for point sources. This is appropriate if, for example, the gravitational wave background is dominated by astrophysical sources. No signal was seen. Upper limit maps were produced assuming two different power laws for the source strain power spectrum. As an application, I also focused on the position of Sco-X1, the closest low-mass X-ray binary. Since its expected signal is a narrow line at twice the unknown spin frequency, I set a frequency dependent limit on the gravitational wave strain arriving from that source. The author gratefully acknowledges the support of the LIGO Laboratory, which in turn is funded by the United States National Science Foundation.

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