Low-Degree High-Frequency p and g Modes in the Solar Core

TL;DR

This paper investigates how low-degree high-frequency p and g modes can improve understanding of the solar core's structure and rotation by incorporating them into inversion models, despite the lack of direct detection.

Contribution

It introduces a methodology to assess the impact of g and p modes on solar core rotation inversions using artificial data sets.

Findings

G modes significantly enhance core rotation inference.

Low-frequency p modes contribute valuable information.

Methodology enables evaluation of mode effects on solar models.

Abstract

Solar gravity (g) modes propagate within the radiative part of the solar interior and are highly sensitive to the physical conditions of the solar core. They would represent the best tool to infer the structure and dynamics of the radiative interior, in particular the core, if they were properly detected and characterized. Although individual rotational splittings for g modes have not yet been calculated, we have to understand the effect of these modes, and also low-degree high-frequency p modes, on the inversion of the solar rotation rate between 0.1 and 0.2 Rs. In this work, we follow the methodology developed in Mathur et al. (2008) and Garcia et al. (2008), adding g modes and low-degree high-frequency p modes to artificial inversion data sets, in order to study how they convey information on the solar core rotation.