Helioseismic inference of the solar radiative opacity

Gaël, B.; Pain, J.; Cossé, P.; Blancard, C.; Gilleron, F.; Pradhan, A.K.; Fontes, C.J.; Colgan, J.; Noels, A.; Christensen-Dalsgaard, J.; Deal, M.; Ayukov, S.V.; Baturin, V.A.; Oreshina, A.V.; Scuflaire, R.; Pinçon, C.; Lebreton, Y.; Corbard, T.; Eggenberger, P.; Hakel, P.; Kilcrease, D.P.

Авторы: Gaël Buldgen, Pain Jean-Christophe, Cossé Philippe, Blancard Christophe, Gilleron Franck, Pradhan Anil K., Fontes Christopher J., Colgan James, Noels Arlette, Christensen-Dalsgaard Jørgen, Deal Morgan, Ayukov Sergey V., Baturin Vladimir A., Oreshina Anna V., Scuflaire Richard, Pinçon Charly, Lebreton Yveline, Corbard Thierry, Eggenberger Patrick, Hakel Peter, Kilcrease David P.
Журнал: Nature communications
Том: 16
Год издания: 2025
Издательство: Nature Pub. Group
Местоположение издательства: United Kingdom
Первая страница: 1
Последняя страница: 14
Номер статьи: 693
DOI: 10.1038/s41467-024-54793-y
Аннотация: The Sun is the most studied of all stars, and thus constitutes a benchmark forstellarmodels. However, our vision of the Sun is still incomplete, as illustratedby the current debate on its chemical composition. The problem reaches farbeyond chemical abundances and is intimately linked to microscopic andmacroscopic physical ingredients of solar models such as radiative opacity, forwhich experimental results have been recently measured that still await theoreticalexplanations. We present opacity profiles derived from helioseismicinferences and compare them with detailed theoretical computations ofindividual element contributions using three different opacity computationcodes, in a complementary way to experimental results. We find that ourseismic opacity is about 10% higher than theoretical values used in currentsolar models around 2 million degrees, but lower by 35% than some recentavailable theoretical values. Using the Sun as a laboratory of fundamentalphysics, we show that quantitative comparisons between various opacitytables are required to understand the origin of the discrepancies betweenreported helioseismic, theoretical and experimental opacity values.
Добавил в систему: Орешина Анна Валерьевна

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Helioseismic inference of the solar radiative opacityстатья

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