Amplitudes of High-Degree p-Modes in the Quiet and Active Sun

TL;DR

This study examines how high-degree p-mode amplitudes vary between active and quiet Sun regions across different solar cycle phases, revealing amplitude decreases with masking and cycle-dependent behavior.

Contribution

It provides new insights into the amplitude variations of high-degree p-modes in different solar activity conditions and the effects of masking active regions.

Findings

p-mode amplitudes are higher at solar minimum than maximum

Amplitude decreases after masking active regions

Amplitude behavior varies with solar cycle phase and degree

Abstract

We investigate mode amplitudes in the active and quiet Sun in both maximum and minimum phases of the solar activity cycle. We confirm previous studies showing that p-mode amplitudes at solar minimum are higher than at solar maximum. We mask active regions of a certain magnetic field strength and compare the masked and unmasked acoustic power. After applying the masks, the preliminary analysis indicates that the amplitude decreases over all degrees during solar minimum, compared to the unmasked case, while at solar maximum the amplitude first decreases up to l ~ 300 and then increases at higher degrees.