LISA verification binaries with updated distances from Gaia Data Release 2
By T. Kupfer, V. Korol, S. Shah, G. Nelemans, Thomas R. Marsh, G. Ramsay, Paul J. Groot, D. Steeghs, E. Rossi. Monthly notices of the Royal Astronomical Society, 2018
145 citations recorded by the source corpus.
Ultracompact binaries with orbital periods less than a few hours will dominate the gravitational wave signal in the mHz regime. Until recently, 10 systems were expected to have a predicted gravitational wave signal strong enough to be detectable by the Laser Interferometer Space Antenna (LISA), the so-called ‘verification binaries’. System parameters, including distances, are needed to provide an accurate prediction of the expected gravitational wave strength to be measured by LISA. Using parallaxes from Gaia Data Release 2 we calculate signal-to-noise ratios (SNR) for ≈50 verification binary candidates. We find that 11 binaries reach an SNR ≥ 20, two further binaries reaching an SNR≥ 5, and three more systems are expected to have a SNR≈ 5 after 4 yr integration with LISA. For these 16 systems, we present predictions of the gravitational wave amplitude (A) and parameter uncertainties from Fisher information matrix on the amplitude (A) and inclination (ι).
Subfields: Astronomy and Astrophysics
View Paper: https://www.semanticscholar.org/paper/610f275097d725fa5fabea9d1b1c724e9bff3a5d
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In Astronomy and Astrophysics
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Citations in the corpus
- Unveiling the gravitational universe at μ-Hz frequencies (2019, background): “Recently, one of these systems, CD–30◦11223 [117] has been confirmed to be a detectable GW source [166].”
- The Laser Interferometer Space Antenna: Unveiling the Millihertz Gravitational Wave Sky (2019, background): “Several “verification binaries” are already known through EM observations [15], providing guaranteed multimessenger sources (large blue as-”
- Predicting the LISA white dwarf binary population in the Milky Way with cosmological simulations (2019, background): “These electromagnetically identified binaries are called ”verification binaries” and are guarunteed multimessenger sources (see Kupfer et al. 2018, for an updated list using Gaia distances).”