Detecting individual gravity modes in the Sun: Chimera or reality?

TL;DR

This paper discusses recent advances in helioseismology, suggesting that individual low-frequency solar gravity modes might have been detected using GOLF/SoHO data, which could significantly enhance understanding of the solar core.

Contribution

The study applies new theoretical methods to GOLF data, indicating potential identification of individual solar gravity modes, challenging previous assumptions.

Findings

Possible detection of individual low-frequency g modes

Advancement in helioseismic measurement techniques

Implications for understanding solar core rotation

Abstract

Over the past 15 years, our knowledge of the interior of the Sun has tremendously progressed by the use of helioseismic measurements. However, to go further in our understanding of the solar core, we need to measure gravity (g) modes. Thanks to the high quality of the Doppler-velocity signal measured by GOLF/SoHO, it has been possible to unveil the signature of the asymptotic properties of the solar g modes, thus obtaining a hint of the rotation rate in the core. However, the quest for the detection of individual g modes is not yet over. In this work, we apply the latest theoretical developments to guide our research using GOLF velocity time series. In contrary to what was thought till now, we are maybe starting to identify individual low-frequency g modes...