Accelerating gravitational wave parameter estimation with multi-band template interpolation

Serena Vinciguerra, John Veitch, Ilya Mandel

Research output: Contribution to journalArticleResearchpeer-review

16 Citations (Scopus)

Abstract

Parameter estimation on gravitational wave signals from compact binary coalescence (CBC) requires the evaluation of computationally intensive waveform models, typically the bottleneck in the analysis. This cost will increase further as low frequency sensitivity in later second and third generation detectors motivates the use of longer waveforms. We describe a method for accelerating parameter estimation by exploiting the chirping behaviour of the signals to sample the waveform sparsely for portions where the full frequency resolution is not required. We demonstrate that the method can reproduce the original results with a waveform mismatch of ≤5 × 10-7, but with a waveform generation cost up to ∼50 times lower for computationally costly frequency-domain waveforms starting from below 8 Hz.

Original languageEnglish
Article number115006
Number of pages16
JournalClassical and Quantum Gravity
Volume34
Issue number11
DOIs
Publication statusPublished - 18 May 2017
Externally publishedYes

Keywords

  • Einstein telescope
  • LIGO
  • parameter estimation
  • waveform optimization

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