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astro-ph.GA2025
Gaussian Process Methods for Very Large Astrometric Data Sets
Timothy Hapitas, Lawrence M. Widrow, Thavisha E. Dharmawardena +1
We present a novel non-parametric method for inferring smooth models of the mean velocity field and velocity dispersion tensor of the Milky Way from astrometric data. Our approach…
astro-ph.GA2024
Linear operator theory of phase mixing
Keir Darling, Lawrence M. Widrow
We study solutions of the collisionless Boltzmann equation (CBE) in a functional Koopman representation. This facilitates the use of linear spectral techniques characteristic of th…