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Long gravitational-wave transients and associated detection strategies for a network of terrestrial interferometers

Thrane, Eric and Kandhasamy, Shivaraj and Ott, Christian D. and Anderson, Warren G. and Christensen, Nelson L. and Coughlin, Michael W. and Dorsher, Steven and Giampanis, Stefanos and Mandic, Vuk and Mytidis, Antonis and Prestegard, Tanner and Raffai, Peter and Whiting, Bernard (2011) Long gravitational-wave transients and associated detection strategies for a network of terrestrial interferometers. Physical Review D, 83 (8). 083004. ISSN 0556-2821.

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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.

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Additional Information:© 2011 American Physical Society. Received 9 December 2010; published 11 April 2011. This work was supported by NSF Grant No. PHY-0854790, PHY-0758035 AST-0855535, OCI-0905046, PHY-0960291 and PHY-0970074. S.G. acknowledges the support of the Max Planck Gesellschaft. P. R. acknowledges the support of the Hungarian National Office for Research and Technology (NKTH) through the Polanyi program (Grant No. KFKT-2006-01-0012). This paper has been assigned LIGO document number LIGOP1000124.
Funding AgencyGrant Number
NSFPHY- 0854790
Max Planck GesellschaftUNSPECIFIED
Hungarian National Office for Research and Technology (NKTH) Polanyi ProgramKFKT-2006-01-0012
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Other Numbering System NameOther Numbering System ID
LIGO Document NumberLIGO-P1000124
Classification Code: PACS: 95.85.Sz, 95.30.Sf, 95.55.Ym
Record Number:CaltechAUTHORS:20110505-113830317
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:23560
Deposited By: Jason Perez
Deposited On:05 May 2011 22:10
Last Modified:26 Dec 2012 13:13

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