Detecting individual gravity modes in the Sun

TL;DR

This paper reports the potential detection of dipole gravity modes in the Sun, which could significantly improve understanding of the solar core's structure and rotation, reducing uncertainties in solar models.

Contribution

It presents a deeper analysis of GOLF/SoHO data revealing a pattern consistent with dipole gravity modes, offering new constraints on the solar core's rotation and structure.

Findings

Identification of a pattern of peaks as potential gravity modes

Evidence suggesting a faster rotation rate inside the solar core

Improved constraints on the density of deep solar interior layers

Abstract

Many questions are still open regarding the structure and the dynamics of the solar core. By constraining more this region in the solar evolution models, we can reduce the incertitudes on some physical processes and on momentum transport mechanisms. A first big step was made with the detection of the signature of the dipole-gravity modes in the Sun, giving a hint of a faster rotation rate inside the core. A deeper analysis of the GOLF/SoHO data unveils the presence of a pattern of peaks that could be interpreted as dipole gravity modes. In that case, those modes can be characterized, thus bringing better constraints on the rotation of the core as well as some structural parameters such as the density at these very deep layers of the Sun interior.