Towards a detection of individual g modes in the Sun

TL;DR

This paper reports the potential detection of individual dipole gravity modes in the Sun using data analysis techniques, which could improve understanding of the solar core's properties.

Contribution

The study introduces a method to identify and characterize individual solar g modes, revealing consistent frequency splittings across different datasets.

Findings

Detection of a pattern of peaks consistent with g modes

Identification of a quasi constant frequency splitting

Common signals found in multiple datasets

Abstract

Since the detection of the asymptotic properties of the dipole gravity modes in the Sun, the quest to find the individual gravity modes has continued. A deeper analysis of the GOLF/SoHO data unveils the presence of a pattern of peaks that could be interpreted as individual dipole gravity modes. The computed collapsed spectrum -around these candidate modes- uncovers the presence of a quasi constant frequency splitting, in contrast with regions where no g modes are expected in which the collapsogram gives random results. Besides, the same technique applied to VIRGO/SoHO unveils some common signals between both power spectra. Thus, we can identify and characterize the modes, for example, with their central frequency and splittings. This would open the path towards new investigations to better constrain the solar core.