Long gravitational-wave transients and associated detection strategies for a network of terrestrial interferometers
Dec, 2010
Citations per year
Abstract: (arXiv)
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 timescales 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.- 95.55.Ym
- 95.30.Sf
- 95.85.Sz
- background: stochastic
- binary: compact
- gravitational radiation: emission
- interferometer: network
- data analysis method
- frequency: time dependence
- supernova
References(116)
Figures(19)
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