SIGNAL (programming language)

Approx

Linguistics

Philosophy

Gravitation

Computational physics

Signal-to-noise ratio (imaging)

Astrophysics

Operating system

Telecommunications

Mass ratio

Computer science

Antenna (radio)

Physics

Amplitude

Mathematics

Optics

Astronomy

Image (mathematics)

Interferometry

Artificial intelligence

Gravitational wave

Programming language

Gravitational-wave observatory

Noise (video)

Binary number

Space (punctuation)

Arithmetic

Monthly Notices of the Royal Astronomical Society

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 (⁠|$\mathcal {A}$|⁠) and parameter uncertainties from Fisher information matrix on the amplitude (⁠|$\mathcal {A}$|⁠) and inclination (ι).

LISA verification binaries with updated distances from Gaia Data Release 2