Implementing a semicoherent search for continuous gravitational waves using optimally constructed template banks

K. Wette, S. Walsh, R. Prix, and M. A. Papa
Phys. Rev. D 97, 123016 – Published 28 June 2018

Abstract

All-sky surveys for isolated continuous gravitational waves present a significant data-analysis challenge. Semicoherent search methods are commonly used to efficiently perform the computationally-intensive task of searching for these weak signals in the noisy data of gravitational-wave detectors such as LIGO and Virgo. We present a new implementation of a semicoherent search method, weave, that for the first time makes full use of a parameter-space metric to generate banks of search templates at the correct resolution, combined with optimal lattices to minimize the required number of templates and hence the computational cost of the search. We describe the implementation of weave and associated design choices and characterize its behavior using semianalytic models.

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  • Received 10 April 2018

DOI:https://doi.org/10.1103/PhysRevD.97.123016

© 2018 American Physical Society

Physics Subject Headings (PhySH)

Gravitation, Cosmology & Astrophysics

Authors & Affiliations

K. Wette1,2,*, S. Walsh3,2, R. Prix2, and M. A. Papa2,3

  • 1ARC Centre of Excellence for Gravitational Wave Discovery (OzGrav) and Centre for Gravitational Physics, Research School of Physics and Engineering, The Australian National University, Acton ACT 2601, Australia
  • 2Max Planck Institute for Gravitational Physics (Albert Einstein Institute), D-30167 Hannover, Germany
  • 3Department of Physics, University of Wisconsin, Milwaukee, Wisconsin 53201, USA

  • *karl.wette@anu.edu.au

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Vol. 97, Iss. 12 — 15 June 2018

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