Helioseismic inference of the solar radiative opacity.

ABSTRACT: The Sun is the most studied of all stars, and thus constitutes a benchmark for stellar models. However, our vision of the Sun is still incomplete, as illustrated by the current debate on its chemical composition. The problem reaches far beyond chemical abundances and is intimately linked to microscopic and macroscopic physical ingredients of solar models such as radiative opacity, for which experimental results have been recently measured that still await theoretical explanations. We present opacity profiles derived from helioseismic inferences and compare them with detailed theoretical computations of individual element contributions using three different opacity computation codes, in a complementary way to experimental results. We find that our seismic opacity is about 10% higher than th

SUBMITTER: Buldgen G 

PROVIDER: S-EPMC11772836 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature