A method for estimating time-frequency characteristics of compact binary mergers to improve searches for inspiral, merger and ring-down phases separately

Chad Hanna, Miguel Megevand, Evan Ochsner, Carlos Palenzuela

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Recent advances in the description of compact binary systems have produced gravitational waveforms that include inspiral, merger and ring-down phases. Comparing results from numerical simulations with those of post-Newtonian, and related, expansions has provided motivation for employing post-Newtonian waveforms in near merger epochs when searching for gravitational waves and has encouraged the development of analytic fits to full numerical waveforms. Until searches employ full waveforms as templates, data analysts can still conduct separate inspiral, merger and ring-down searches. Improved knowledge about the end of the inspiral phase, the beginning of the merger and the ring-down frequencies will increase the efficiency of searches over each phase separately without needing the exact waveform. We will show that knowledge of the final spin, of which there are many theoretical models and analytic fits to simulations, may give an insight into the time-frequency properites of the merger. We also present implications on the ability to probe the tidal disruption of neutron stars through gravitational waves.

Original languageEnglish (US)
Article number015009
JournalClassical and Quantum Gravity
Volume26
Issue number1
DOIs
StatePublished - Mar 25 2009

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waveforms
estimating
rings
gravitational waves
neutron stars
templates
simulation
time measurement
expansion
probes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

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abstract = "Recent advances in the description of compact binary systems have produced gravitational waveforms that include inspiral, merger and ring-down phases. Comparing results from numerical simulations with those of post-Newtonian, and related, expansions has provided motivation for employing post-Newtonian waveforms in near merger epochs when searching for gravitational waves and has encouraged the development of analytic fits to full numerical waveforms. Until searches employ full waveforms as templates, data analysts can still conduct separate inspiral, merger and ring-down searches. Improved knowledge about the end of the inspiral phase, the beginning of the merger and the ring-down frequencies will increase the efficiency of searches over each phase separately without needing the exact waveform. We will show that knowledge of the final spin, of which there are many theoretical models and analytic fits to simulations, may give an insight into the time-frequency properites of the merger. We also present implications on the ability to probe the tidal disruption of neutron stars through gravitational waves.",
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A method for estimating time-frequency characteristics of compact binary mergers to improve searches for inspiral, merger and ring-down phases separately. / Hanna, Chad; Megevand, Miguel; Ochsner, Evan; Palenzuela, Carlos.

In: Classical and Quantum Gravity, Vol. 26, No. 1, 015009, 25.03.2009.

Research output: Contribution to journalArticle

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