The Great Similarity between Plasmas and Galaxies
 

In this talk I will try to introduce a great similarity between the kinetic description of plasmas and stellar systems such as galaxies, especially to our graduate students who just started learning plasma physics. I will illustrate this through two of my recent results. One is a linear problem on Landau damping in stellar systems [Astrophys. J., 923, 271 (2021)]. The other one is a new “Galactic Disk”-model of a nonlinear equilibrium in plasmas known as a Bernstein-Greene-Kruskal (BGK) mode [submitted, arxiv: 2207.11632 (2022)]. This work is supported by a National Science Foundation grant PHY-2010617.