Exact analytic expressions show that tidal interactions in detached white dwarf binaries raise the braking index above 11/3, giving a mass-independent way to detect tides.
Prospects for Gravitational Wave Measurement of ZTFJ1539+5027
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The short-period eclipsing binary ZTFJ1539+5027 discovered by Burdge et al. (2019) will be a strong gravitational-wave source for the Laser Interferometer Space Antenna (LISA). We study how well LISA will constrain the parameters of this system by analyzing simulated gravitational wave data, and find that LISA observations will significantly improve measurements of the distance and inclination of the source, and allow for novel constraints to be placed on the speed of gravity.
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Inferring the Presence of Tides in Detached White Dwarf Binaries
Exact analytic expressions show that tidal interactions in detached white dwarf binaries raise the braking index above 11/3, giving a mass-independent way to detect tides.