Convectively stabilised background solar models for local helioseismology

TL;DR

This paper develops convectively stabilised background solar models for local helioseismology, enabling more accurate wave simulations by suppressing convective modes, and demonstrates their eigenmode similarity to standard models.

Contribution

It introduces a method to stabilize solar models against convection by modifying the pressure gradient, improving wave simulation accuracy in helioseismology.

Findings

Eigenmodes of stabilised models agree with standard solar models

Stabilised models effectively suppress convective modes

Facilitates more accurate local helioseismology simulations

Abstract

In local helioseismology numerical simulations of wave propagation are useful to model the interaction of solar waves with perturbations to a background solar model. However, the solution to the equations of motions include convective modes that can swamp the waves we are interested in. For this reason, we choose to first stabilise the background solar model against convection by altering the vertical pressure gradient. Here we compare the eigenmodes of our convectively stabilised model with a standard solar model (Model S) and find a good agreement.