Article (Scientific journals)
The Impact of the Transport of Chemicals and Electronic Screening on Helioseismic and Neutrino Observations in Solar Models
Deal, Morgan; Buldgen, Gaël; Manchon, Louis et al.
2025In Solar Physics, 300 (7)
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Keywords :
Abundances; Convection; Helioseismology; Neutrinos; Transport; Astronomy and Astrophysics; Space and Planetary Science; astro-ph.SR
Abstract :
[en] The transport of chemical elements in stellar interiors is one of the greatest sources of uncertainties of solar and stellar modelling. The Sun, with its exquisite spectroscopic, helioseismic and neutrino observations, offers a prime environment to test the prescriptions used for both microscopic and macroscopic transport processes. We study in detail the impact of various formalisms for atomic diffusion on helioseismic constraints in both CLES (Scuflaire et al. 2008a) and Cesam2k20 (Morel and Lebreton 2008; Marques et al. 2013; Deal et al. 2018) models and compare both codes in detail. Moreover, due to the inability of standard models using microscopic diffusion to reproduce light element depletion in the Sun (Li, Be), another efficient process must be included to reproduce these constraints (rotation-induced: Eggenberger et al. 2022, overshooting -or penetrative convection- below the convective envelope: Thévenin et al. 2017, or ad hoc turbulence: Lebreton and Maeder 1987; Richer, Michaud, and Turcotte 2000). However, introducing such an extra mixing leads to issues with the CNO neutrino fluxes (see Buldgen et al. 2023), which seem to be systematically lower than the Borexino observations (Appel et al. 2022). Another key aspect to consider when reconciling models with neutrino fluxes is the impact of electronic screening (Mussack and Däppen 2011).
Research Center/Unit :
STAR - Space sciences, Technologies and Astrophysics Research - ULiège
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Deal, Morgan ;  LUPM, Université de Montpellier, CNRS, Montpellier, France
Buldgen, Gaël  ;  Université de Liège - ULiège > Département d'astrophysique, géophysique et océanographie (AGO) > Astrophysique stellaire théorique et astérosismologie
Manchon, Louis ;  LIRA, Observatoire de Paris, Université PSL, Sorbonne Université, Université Paris Cité, CY Cergy Paris Université, CNRS, Meudon, France
Lebreton, Yveline;  LIRA, Observatoire de Paris, Université PSL, Sorbonne Université, Université Paris Cité, CY Cergy Paris Université, CNRS, Meudon, France ; IPR (Institut de Physique de Rennes) – UMR 6251, Université de Rennes, CNRS, Rennes, France
Noels, Arlette;  STAR Institute, Université de Liège, Liège, Belgium
Scuflaire, Richard  ;  Université de Liège - ULiège > Département d'astrophysique, géophysique et océanographie (AGO) > Astrophysique stellaire théorique et astérosismologie
Language :
English
Title :
The Impact of the Transport of Chemicals and Electronic Screening on Helioseismic and Neutrino Observations in Solar Models
Publication date :
July 2025
Journal title :
Solar Physics
ISSN :
0038-0938
Publisher :
Springer Science and Business Media B.V.
Volume :
300
Issue :
7
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
CNES - Centre National d'Études Spatiales
F.R.S.-FNRS - Fonds de la Recherche Scientifique
ANR - Agence Nationale de la Recherche
Funding text :
M. D. acknowledges support from CNES, focused on PLATO. G. B. acknowledges fundings from the Fonds National de la Recherche Scientifique (FNRS) as a postdoctoral researcher. L. M. acknowledges support from the Agence Nationale de la Recherche (ANR) grant ANR-21-CE31-0018.
Commentary :
28 pages, 12 figures, 3 tables, published in Solar Physics
Available on ORBi :
since 27 December 2025

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