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Title: Gravitational Radiation from Close Binaries with Time-varying Masses

Journal Article · · The Astrophysical Journal (Online)

In the quadrupole approximation of general relativity in the weak-field limit, a time-varying quadrupole moment generates gravitational radiation. Binary orbits are one of the main mechanisms for producing gravitational waves and are the main sources and backgrounds for gravitational-wave detectors across the multiband spectrum. In this paper, we introduce additional contributions to the gravitational radiation from close binaries that arise from time-varying masses along with those produced by orbital motion. Further, we derive phase-dependent formulae for these effects in the quadrupolar limit for binary point masses, which reduce to the formulae that Peters & Mathews derived when the mass of each component is taken to be constant. Finally, we show that gravitational radiation from mass variation can be orders of magnitude greater than that of orbital motion.

Research Organization:
Krell Institute, Ames, IA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); National Science Foundation (NSF)
Grant/Contract Number:
NA0003864
OSTI ID:
1614433
Journal Information:
The Astrophysical Journal (Online), Vol. 882, Issue 1; ISSN 1538-4357
Publisher:
Institute of Physics (IOP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 9 works
Citation information provided by
Web of Science

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Cited By (3)

Stochastic gravitational wave background from accreting primordial black hole binaries during early inspiral stage journal November 2019
Gravitational waves from supernova mass loss and natal kicks in close binaries journal October 2019
Stochastic gravitational wave background from accreting primordial black hole binaries during early inspiral stage text January 2019