Migration of anticyclonic vortices in the protoplanetary disk

TL;DR

This paper uses 2D numerical simulations to study the evolution, persistence, and migration of anticyclonic vortices in protoplanetary disks, focusing on their interaction with spiral density waves.

Contribution

It introduces a detailed numerical analysis of vortex migration mechanisms in protoplanetary disks, including Rossby Wave Instability and nonlinear vortex models.

Findings

Vortices can migrate due to spiral density waves.

Rossby Wave Instability can produce persistent vortices.

Non-linear vortex models show similar migration behaviors.

Abstract

This contribution describes the evolution of the protoplanetary disk using 2D numerical simulations. The 2D Euler equations are solved with the finite volume method. The numerical simulations are used to study the persistence and migration of anticyclonic vortices. Two cases are presented : (1) vortices produced by the Rossby Waves Instability, (2) a non-linear vortex model initially implemented into the disk. The migration of the vortices is due to spiral density waves excited by the vortex in the gas of the disk.