65 citations · 146 across the 5 of their papers we have counts for
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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…
Inferring Time-Dependent Distribution Functions from Kinematic Snapshots
Keir Darling, Lawrence M. Widrow
We propose a method for constructing the time-dependent phase space distribution function (DF) of a collisionless system from an isolated kinematic snapshot. In general, the proble…
Eigenfunctions of Galactic Phase Space Spirals from Dynamic Mode Decomposition
Keir Darling, Lawrence M. Widrow
We investigate the spatiotemporal structure of simulations of the homogeneous slab and isothermal plane models for the vertical motion in the Galactic disc. We use Dynamic Mode Dec…
Emergence of the Gaia Phase Space Spirals from Bending Waves
Keir Darling, Lawrence M. Widrow
We discuss the physical mechanism by which pure vertical bending waves in a stellar disc evolve to form phase space spirals similar to those discovered by Antoja et al. ( arXiv:180…
Bending Waves in the Milky Way's disc from halo substructure
Matthew H. Chequers, Lawrence M. Widrow, Keir Darling
We use -body simulations to investigate the excitation of bending waves in a Milky Way-like disc-bulge-halo system. The dark matter halo consists of a smooth component and a pop…