Flux Transport Dynamo coupled with a Fast Tachocline Scenario

TL;DR

This paper integrates a flux transport dynamo model with a fast tachocline scenario, demonstrating stable solar-like magnetic cycles and latitudinal variations in tachocline thickness consistent with observations.

Contribution

It introduces a nonlinear coupling of the flux transport dynamo with a fast tachocline model, revealing stable solutions and realistic tachocline variations.

Findings

Stable solar-like dynamo solutions achieved.

Latitudinal variation in tachocline thickness observed.

Model aligns with solar observational data.

Abstract

The tachocline is important in the solar dynamo for the generation and the storage of the magnetic fields. A most plausible explanation for the confinement of the tachocline is given by the fast tachocline model in which the tachocline is confined by the anisotropic momentum transfer by the Maxwell stress of the dynamo generated magnetic fields. We employ a flux transport dynamo model coupled with the simple feedback formula of this fast tachocline model which basically relates the thickness of the tachocline to the Maxwell stress. We find that this nonlinear coupling not only produces a stable solar-like dynamo solution but also a significant latitudinal variation in the tachocline thickness which is in agreement with the observations.