First all-sky upper limits from LIGO on the strength of periodic gravitational waves using the Hough transform
- LIGO-California Institute of Technology, Pasadena, California 91125 (United States); and others
We perform a wide parameter-space search for continuous gravitational waves over the whole sky and over a large range of values of the frequency and the first spin-down parameter. Our search method is based on the Hough transform, which is a semicoherent, computationally efficient, and robust pattern recognition technique. We apply this technique to data from the second science run of the LIGO detectors and our final results are all-sky upper limits on the strength of gravitational waves emitted by unknown isolated spinning neutron stars on a set of narrow frequency bands in the range 200-400 Hz. The best upper limit on the gravitational-wave strain amplitude that we obtain in this frequency range is 4.43x10{sup -23}.
- OSTI ID:
- 20711518
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 72, Issue 10; Other Information: DOI: 10.1103/PhysRevD.72.102004; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA). LIGO Scientific Collaboration; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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