Speaker: Justin Feng

Title: Electrovortical formalism for equilibrium plasma states in stationary spacetimes

Abstract: In this talk, I discuss the application of the electrovortical formalism to plasmas in curved spacetime, which is useful for characterizing equilibrium plasma states in stationary spacetime geometries. I provide a brief overview of the formalism, which unifies the flow fields with the electromagnetic four-potential in the fluid equations, and involves the construction of generalized electric and magnetic fields (the latter is known as generalized vorticity in the literature). One interesting result that emerges from this formalism is the identification of an equilibrium state in which magnetic fields are completely expelled from the equator of the horizon for an arbitrary spin Kerr black hole. I also discuss some ongoing work in which I further explore the properties of the generalized vorticity for stationary plasma states in Kerr spacetimes.