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  Astrophysical signal consistency test adapted for gravitational-wave transient searches

Gayathri, V., Bacon, P., Pai, A., Chassande-Mottin, E., Salemi, F., & Vedovato, G. (2019). Astrophysical signal consistency test adapted for gravitational-wave transient searches. Physical Review D, 100(12): 124022. doi:10.1103/PhysRevD.100.124022.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0004-76EE-C Version Permalink: http://hdl.handle.net/21.11116/0000-0005-7303-6
Genre: Journal Article

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 Creators:
Gayathri, V., Author
Bacon, P., Author
Pai, A., Author
Chassande-Mottin, E., Author
Salemi, F.1, Author              
Vedovato, G., Author
Affiliations:
1Observational Relativity and Cosmology, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, ou_24011              

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Free keywords: General Relativity and Quantum Cosmology, gr-qc
 Abstract: Gravitational wave astronomy is established with direct observation of gravitational wave from merging binary black holes and binary neutron stars during the first and second observing run of LIGO and Virgo detectors. The gravitational-wave transient searches mainly categories into two families: modeled and modeled-independent searches. The modeled searches are based on matched filtering techniques and model-independent searches are based on the extraction of excess power from time-frequency representations. We have proposed a hybrid method, called wavegraph that mixes the two approaches. It uses astrophysical information at the extraction stage of model-independent search using a mathematical graph. In this work, we assess the performance of wavegraph clustering in real LIGO and Virgo noises (the sixth science run and the first observing run) and using the coherent WaveBurst transient search as a backbone. Further, we propose a new signal consistency test for this algorithm. This test uses the amplitude profile information to distinguish between the gravitational wave transients from the noisy glitches. This test is able to remove a large fraction of loud glitches, which thus results in additional overall sensitivity in the context of searches for binary black-hole mergers in the low-mass range.

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 Dates: 2019-07-252019
 Publication Status: Published in print
 Pages: main paper: 8 page and 12 figures, total with appendices: 10 pages and 12 figures
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 Identifiers: arXiv: 1907.10851
URI: http://arxiv.org/abs/1907.10851
DOI: 10.1103/PhysRevD.100.124022
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Title: Physical Review D
Source Genre: Journal
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Pages: - Volume / Issue: 100 (12) Sequence Number: 124022 Start / End Page: - Identifier: -