Looking for ancillary signals around GW150914

Maroju, Rahul and Dyuthi, Sristi Ram and Sukrutha, Anumandla and Desai, Shantanu (2019) Looking for ancillary signals around GW150914. Journal of Cosmology and Astroparticle Physics, 2019 (04). 007-007. ISSN 1475-7516

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Abstract

We replicated the procedure in Liu and Jackson [1], who had found evidence for a low amplitude signal in the vicinity of GW150914. This was based upon the large correlation between the time integral of the Pearson cross-correlation coefficient in the off-source region of GW150914, and the Pearson cross-correlation in a narrow window around GW150914, for the same time lag between the two LIGO detectors as the gravitational wave signal. Our results mostly agree with those in Liu and Jackson [2]. We find the statistical significance of the observed cross-correlation to be about 2.5 σ. We also used the cross-correlation method to search for short duration signals at all other physical values of the time lag, within this 4096 second time interval, but do not find evidence for any statistically significant events in the off-source region.

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IITH Creators:	IITH Creators ORCiD Desai, Shantanu http://orcid.org/0000-0002-0466-3288
Item Type:	Article
Uncontrolled Keywords:	gravitational wave detectors, gravitational waves / experiments
Subjects:	Physics
Divisions:	Department of Physics
Depositing User:	Team Library
Date Deposited:	22 Jul 2019 10:08
Last Modified:	22 Jul 2019 10:08
URI:	http://raiithold.iith.ac.in/id/eprint/5774
Publisher URL:	http://doi.org/10.1088/1475-7516/2019/04/007
Related URLs:	Google Scholar

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