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PIRSA:17110071

Video URL

https://pirsa.org/17110071

An alternative significance estimation for the evidence for echoes

Nielsen, A. (2017). An alternative significance estimation for the evidence for echoes. Perimeter Institute for Theoretical Physics. https://pirsa.org/17110071

Alex Nielsen Albert Einstein Institute

Talk numberPIRSA:17110071
DOI10.48660/17110071
Source RepositoryPIRSA
Collection
Talk Type Conference
Subject

Abstract

The noise dominated nature of the gravitational wave detectors requires an assessment of the noise background in the search for astrophysical signals. Starting with a frequentist approach, the original analysis used about 16 seconds of data after the merger signal to find how frequently random noise mimics the expected signal. We present the results of extending the background estimation to 4096 seconds of public LIGO data and discuss the concerns arising from subtleties in the analysis for the long and self-similar echo templates.