Bistable attractors in a model of convection-driven spherical dynamos

TL;DR

This paper investigates two distinct chaotic attractors in a convection-driven spherical dynamo model, exploring their existence, properties, and the hysteretic transition between them as the rotation rate varies.

Contribution

It identifies and characterizes two different chaotic attractors and demonstrates a hysteretic transition between them based on the rotation parameter.

Findings

Existence of two distinct chaotic attractors in the model

Hysteretic transition between attractors as rotation parameter changes

Estimation of the basins of attraction for each attractor

Abstract

The range of existence and the properties of two essentially different chaotic attractors found in a model of nonlinear convection-driven dynamos in rotating spherical shells are investigated. A hysteretic transition between these attractors is established as a function of the rotation parameter \ttau. The width of the basins of attraction is also estimated.