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Gravity seminar: Charlie Hoy, University of Portsmouth — From LVK to LISA: Extending BILBY to perform Bayesian inference with space-based gravitational-wave observatories
April 12, 2024 @ 2:30 pm - 3:30 pm
The Laser Interferometer Space Antenna (LISA) is scheduled to launch in the mid 2030s, and is expected to observe gravitational-wave candidates from massive black-hole binary mergers, extreme mass-ratio inspirals, and more. Accurately inferring the source properties from the observed gravitational-wave signals is crucial to maximise the scientific return of the LISA mission. BILBY, the user-friendly Bayesian inference library, is regularly used for performing gravitational-wave inference on data from existing ground-based gravitational-wave detectors. In this talk I will show that BILBY can be used to perform parameter estimation with LISA in a) zero-noise and b) idealized instrumental noise. I will also discuss the computational cost and performance of full nested sampling compared with techniques for optimising likelihood calculations, such as the heterodyned likelihood.