Long gravitational-wave transients and associated detection strategies for a network of terrestrial interferometers
- School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455 (United States)
- TAPIR, Caltech, Pasadena, California 91125 (United States)
- University of Wisconsin-Milwaukee, Milwaukee, Wisconsin 53201 (United States)
- Physics and Astronomy, Carleton College, Northfield, Minnesota 55057 (United States)
- Albert-Einstein-Institut, Max-Planck-Institut fuer Gravitationsphysik, D-30167 Hannover (Germany)
- Department of Physics, University of Florida, Gainsville, Florida 32611 (United States)
- Institute of Physics, Eoetvoes University, 1117 Budapest (Hungary)
Searches for gravitational waves (GWs) traditionally focus on persistent sources (e.g., pulsars or the stochastic background) or on transients sources (e.g., compact binary inspirals or core-collapse supernovae), which last for time scales of milliseconds to seconds. We explore the possibility of long GW transients with unknown waveforms lasting from many seconds to weeks. We propose a novel analysis technique to bridge the gap between short O(s)''burst'' analyses and persistent stochastic analyses. Our technique utilizes frequency-time maps of GW strain cross power between two spatially separated terrestrial GW detectors. The application of our cross power statistic to searches for GW transients is framed as a pattern recognition problem, and we discuss several pattern-recognition techniques. We demonstrate these techniques by recovering simulated GW signals in simulated detector noise. We also recover environmental noise artifacts, thereby demonstrating a novel technique for the identification of such artifacts in GW interferometers. We compare the efficiency of this framework to other techniques such as matched filtering.
- OSTI ID:
- 21541438
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 83, Issue 8; Other Information: DOI: 10.1103/PhysRevD.83.083004; (c) 2011 American Institute of Physics; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
COMPARATIVE EVALUATIONS
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GRAVITATIONAL WAVES
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PULSARS
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STOCHASTIC PROCESSES
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SUPERNOVAE
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WAVE FORMS
BINARY STARS
COSMIC RADIO SOURCES
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