activity
20192026
most citedModes of a stellar system I: ergodic systems

20 citations · 47 across the 6 of their papers we have counts for

collaborators

6 papers

astro-ph.EP2026

Velocities of Free Floaters in a Sea of Stars

Jun Yan Lau, Dong Lai

We investigate the velocity evolution of free-floating planets and interstellar objects (``free floaters'') through gravitational scatterings by field stars (with the stellar mass…

astro-ph.GA2023

Boltzmann Equation Field Theory I: Ensemble Averages

Jun Yan Lau

I present an unbiased method of mapping particles to distribution functions and vice versa. This method alone defines the canonical formulation of statistical mechanics, since it c…

astro-ph.GA2021★ 8 cited

Modes of a stellar system II: non-ergodic systems

Jun Yan Lau, James Binney

An equation is derived for the energy of a small disturbance in a system that is generated by a distribution function (DF) of the form $f(\vJ)$ -- most galaxies and star clusters c…

astro-ph.GA2021★ 3 cited

Probabilistic distribution functions

Jun Yan Lau, James Binney

Observed clusters should be modelled by considering the distribution function to be a random variable that quantifies the degree of excitation of the system's normal modes. A syste…

astro-ph.GA2021★ 20 cited

Modes of a stellar system I: ergodic systems

Jun Yan Lau, James Binney

The excursions of star clusters and galaxies around statistical equilibria are studied. For a stable ergodic model Antonov's Hermitian operator on six-dimensional phase space has t…

astro-ph.GA2019★ 16 cited

Relaxation of spherical stellar systems

Jun Yan Lau, James Binney

10,000 simulations of 1000-particle realisations of the same cluster are computed by direct force summation. Over three crossing times the original Poisson noise is amplified more…