Global p-mode oscillations throughout the complete solar cycle 23 and the beginning of cycle 24

TL;DR

This study analyzes the variations in global p-mode oscillation parameters throughout solar cycle 23 and the start of cycle 24, providing insights into the Sun's internal structural and dynamical changes.

Contribution

It offers a comprehensive analysis of p-mode parameter variations over an entire solar cycle using space-based helioseismic data, highlighting their relation to solar activity.

Findings

Parameters vary with solar activity levels.

Provides a complete temporal profile of p-mode changes.

Links oscillation variations to solar interior dynamics.

Abstract

The parameters of the p-mode oscillations vary with solar activity. Such temporal variations provide insights for the study of the structural and dynamical changes occurring in the Sun's interior throughout the solar cycle. We present here a complete picture of the temporal variations of the global p-mode parameters (excitation, damping, frequency, peak asymmetry, and rotational splitting) over the entire solar cycle 23 and the beginning of cycle 24 as observed by the space-based, Sun-as-a-star helioseismic GOLF and VIRGO instruments onboard SoHO.