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Published May 15, 2018 | Published + Submitted
Journal Article Open

Application of a zero-latency whitening filter to compact binary coalescence gravitational-wave searches

Abstract

Joint electromagnetic and gravitational-wave (GW) observation is a major goal of both the GW astronomy and electromagnetic astronomy communities for the coming decade. One way to accomplish this goal is to direct follow-up of GW candidates. Prompt electromagnetic emission may fade quickly, therefore it is desirable to have GW detection happen as quickly as possible. A leading source of latency in GW detection is the whitening of the data. We examine the performance of a zero-latency whitening filter in a detection pipeline for compact binary coalescence (CBC) GW signals. We find that the filter reproduces signal-to-noise ratio (SNR) sufficiently consistent with the results of the original high-latency and phase-preserving filter for both noise and artificial GW signals (called "injections"). Additionally, we demonstrate that these two whitening filters show excellent agreement in χ^2 value, a discriminator for GW signals.

Additional Information

© 2018 American Physical Society. Received 22 August 2017; published 14 May 2018. The authors are grateful to the LIGO lab for an offer of the S5 strain data. LIGO was constructed by the California Institute of Technology and Massachusetts Institute of Technology with funding from the National Science Foundation. This research was supported by the National Science Foundation through PHY-1454389 and ACI-1642391. Funding for this project was provided by the Charles E. Kaufman Foundation of The Pittsburgh Foundation.

Attached Files

Published - PhysRevD.97.103009.pdf

Submitted - 1708.04125.pdf

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Additional details

Created:
August 19, 2023
Modified:
October 18, 2023