Mode visibilities in radial velocity and intensity Sun-as-a-star helioseismic measurements
David Salabert, Jerome Ballot, Rafael A Garcia
TL;DR
This study measures and compares the mode visibilities and m-amplitude ratios in Sun-as-a-star helioseismic data, providing observational benchmarks against theoretical models.
Contribution
It offers the first extensive observational measurements of mode visibilities and m-amplitude ratios in Sun-as-a-star data, enhancing understanding of solar oscillation properties.
Findings
Measured mode visibilities for l=0,1,2,3
Determined m-amplitude ratios for l=2 and 3
Compared observational data with theoretical predictions
Abstract
We analyze more than 5000 days of Sun-as-a-star radial velocity GOLF and intensity VIRGO observations to measure the visibilities of the l=0, 1, 2, and 3 modes and the m-amplitude ratios of the l=2 and 3 modes in the solar acoustic spectrum. We provide observational values that we compare to theoretical predictions.
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