Tunable compression of template banks for fast gravitational-wave detection and localisation

Alvin J. K. Chua, Jonathan R. Gair

Research output: Contribution to journalArticlepeer-review

Abstract

One strategy for reducing the online computational cost of matched-filter searches for gravitational waves is to introduce a compressed basis for the waveform template bank in a grid-based search. In this paper, we propose and investigate several tunable compression schemes for a general template bank. Through offline compression, such schemes are shown to yield faster detection and localisation of signals, along with moderately improved sensitivity and accuracy over coarsened banks at the same level of computational cost. This is potentially useful for any search involving template banks, and especially in the analysis of data from future space-based detectors such as eLISA, for which online grid searches are difficult due to the long-duration waveforms and large parameter spaces.
Original languageEnglish
Article number122001
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume93
Issue number12
DOIs
Publication statusPublished - 15 Jun 2016

Keywords

  • astro-ph.IM
  • gr-qc

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