Variation in p-mode power over solar cycle 23 as seen from BiSON and GOLF observations

TL;DR

This study investigates how p-mode oscillation power varies over solar cycle 23 using BiSON and GOLF data, revealing a 20% decrease in power and height discrepancies in GOLF observations.

Contribution

Introduces a new technique to analyze p-mode power variation and compares observations from BiSON and GOLF during solar cycle 23.

Findings

20% decrease in p-mode power during the ascending phase

GOLF red-wing data indicates a different observational height

Results align with previous studies on solar oscillations

Abstract

We analyzed BiSON and GOLF/SoHO data with a new technique, to investigate p-mode power variation over solar cycle 23. We found a decrease in the mean velocity power of about 20% for BiSON during the ascending phase, in agreement with previous findings. We also found that GOLF, during the red-wing configuration, seems to be working at a different height than the theoretically computed one.