A decihertz space gravitational-wave detector paired with a ground network would localize compact binary mergers far more precisely than the ground network alone, supporting standard-siren cosmology, early warning, and studies of white dwarfs, black holes, and intermediate-mass black holes.
Inferring the Presence of Tides in Detached White Dwarf Binaries
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abstract
Tidal interactions can play an important role as compact white dwarf (WD) binaries are driven together by gravitational waves (GWs). This will modify the strain evolution measured by future space-based GW detectors and impact the potential outcome of the mergers. Surveys now and in the near future will generate an unprecedented population of detached WD binaries to constrain tidal interactions. Motivated by this, I summarize the deviations between a binary evolving under the influence of only GW emission and a binary that is also experiencing some degree of tidal locking. I present analytic relations for the first and second derivative of the orbital period and braking index. Measurements of these quantities will allow the inference of tidal interactions, even when the masses of the component WDs are not well constrained. Finally, I discuss tidal heating and how it can provide complimentary information.
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gr-qc 1years
2019 1verdicts
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Astrophysics and cosmology with a decihertz gravitational-wave detector: TianGO
A decihertz space gravitational-wave detector paired with a ground network would localize compact binary mergers far more precisely than the ground network alone, supporting standard-siren cosmology, early warning, and studies of white dwarfs, black holes, and intermediate-mass black holes.