Seismic diagnosis from gravity modes strongly affected by rotation

TL;DR

This paper introduces a new method to analyze the internal rotation of stars using low-frequency gravity modes strongly affected by rotation, providing a way to interpret their spectral signatures.

Contribution

It presents a novel approach based on asymptotic theory to analyze rotational effects in gravity modes, which are highly influenced by stellar rotation.

Findings

Predicts two spectral patterns for gravity modes affected by rotation

Method can be compared with observed spectra and 2D oscillation codes

Enhances understanding of stellar internal rotation

Abstract

Most of the information we have about the internal rotation of stars comes from modes that are weakly affected by rotation, for example by using rotational splittings. In contrast, we present here a method, based on the asymptotic theory of Prat et al. (2016), which allows us to analyse the signature of rotation where its effect is the most important, that is in low-frequency gravity modes that are strongly affected by rotation. For such modes, we predict two spectral patterns that could be confronted to observed spectra and those computed using fully two-dimensional oscillation codes.