Testing Gravitational Memory Generation with Compact Binary Mergers
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PhysRevLett.121.071102.pdf
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254.55 KB
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Adobe PDF
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Author(s)
Yang, Huan
Martynov, Denis
Date Issued
August 2018
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Yang, Huan and Denis Martynov. "Testing Gravitational Memory Generation with Compact Binary Mergers." Physical Review Letters 121, 7 (August 2018): 071102 © 2018 American Physical Society
Version
Final published version
Abstract
Gravitational memory is an important prediction of General Relativity, which is intimately related to asymptotic symmetries at null infinity and the so-called soft graviton theorem. For a given transient astronomical event, the angular distribution of energy and angular momentum fluxes uniquely determine the displacement and spin memory effect in the sky. We investigate the possibility of using the binary black hole merger events detected by Advanced LIGO/Virgo to test the relation between the source’s energy emission and the gravitational memory measured on Earth, as predicted by General Relativity. We find that while it is difficult for Advanced LIGO/Virgo one-year detection of a third-generation detector network will easily rule out the hypothesis assuming isotropic memory distribution. In addition, we construct a phenomenological model for memory waveforms of binary neutron star mergers and use it to address the detectability of memory from these events in the third-generation detector era. We find that measuring gravitational memory from neutron star mergers is a possible way to distinguish between different neutron star equations of state.
MIT Department
LIGO (Observatory : Massachusetts Institute of Technology)
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1103/PhysRevLett.121.071102
