The Joker: A custom Monte Carlo sampler for binary-star and exoplanet radial velocity data

24 Oct 2016Adrian M. Price-WhelanDavid W. HoggDaniel Foreman-MackeyHans-Walter Rix

Given sparse or low-quality radial-velocity measurements of a star, there are often many qualitatively different stellar or exoplanet companion orbit models that are consistent with the data. The consequent multimodality of the likelihood function leads to extremely challenging search, optimization, and MCMC posterior sampling over the orbital parameters... (read more)

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