A New Generation of Standard Solar Models

By N. Vinyoles, A. Serenelli, F. Villante, S. Basu, J. Bergström, M. Gonzalez-Garcia, M. Maltoni, C. Peña-Garay, N. Song. 2016

337 citations recorded by the source corpus.

We compute a new generation of standard solar models (SSMs) that includes recent updates on some important nuclear reaction rates and a more consistent treatment of the equation of state. Models also include a novel and flexible treatment of opacity uncertainties based on opacity kernels, required in light of recent theoretical and experimental works on radiative opacity. Two large sets of SSMs, each based on a different canonical set of solar abundances with high and low metallicity (Z), are computed to determine model uncertainties and correlations among different observables. We present detailed comparisons of high- and low-Z models against different ensembles of solar observables, including solar neutrinos, surface helium abundance, depth of the convective envelope, and sound speed profile. A global comparison, including all observables, yields a p-value of 2.7σ for the high-Z model and 4.7σ for the low-Z one. When the sound speed differences in the narrow region of are excluded from the analysis, results are 0.9σ and 3.0σ for high- and low-Z models respectively. These results show that high-Z models agree well with solar data but have a systematic problem right below the bottom of the convective envelope linked to steepness of molecular weight and temperature gradients, and that low-Z models lead to a much more general disagreement with solar data. We also show that, while simple parametrizations of opacity uncertainties can strongly alleviate the solar abundance problem, they are insufficient to substantially improve the agreement of SSMs with helioseismic data beyond that obtained for high-Z models due to the intrinsic correlations of theoretical predictions.

Subfields: Astronomy and Astrophysics

View Paper: https://www.semanticscholar.org/paper/d7bf2c2a511482e55bab76629f5cf392e0cd7488

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Citations in the corpus

2020 global reassessment of the neutrino oscillation picture (2020, background): “As in previous works, we have considered the low metallicity version of the standard solar model, labeled as AGSS09 [42].”
Global analysis of three-flavour neutrino oscillations: synergies and tensions in the determination of θ23, δCP, and the mass ordering (2018, methodology): “• External information : Standard Solar Model [38].”
The landscape of QCD axion models (2020, background): “The central temperature and density of the Sun [363], RGB stars, HB stars and WDs are also shown, for reference.”
Neutrino Oscillations and Non-standard Interactions (2017, background): “The more recent versions of the SSM offer at least two different versions according to the solar metallicity assumed [55, 56].”
NuFit-6.0: updated global analysis of three-flavor neutrino oscillations (2024, neutral): “Consequently, two different sets of Standard Solar Models were built, each based on the corresponding set of solar abundances [48–50].”
Updated fit to three neutrino mixing: exploring the accelerator-reactor complementarity (2016, methodology): “ the solar neutrino regions are shown for two latest versions of the Standard Solar Model, namely the GS98 and the AGSS09 models [61] obtained with two dierent determinations of the solar abundances [62]. 3.2 m2 3‘ determination in LBL accelerator experiments versus reactors Figure6illustrates the c”
Neutrino non-standard interactions: A status report (2019, methodology): “The different solar neutrino flux components (pp, pep, hep,7Be, 8B, 13N, 15O, and 17F) depend on the solar model; here we will consider the B16-GS98 Solar Model [128].”
The Updated BaSTI Stellar Evolution Models and Isochrones. I. Solar-scaled Calculations (2018, methodology): “AASTEX sample article 9 revised solar surface compositions discussed before (e.g. Basu & Antia 2004; Vinyoles et al. 2017, and references therein).”
Flavor structures of charged fermions and massive neutrinos (2019, background): “For example, John Bahcall’s pioneering work in establishing the Standard Solar Model (SSM) has exercised a profound and far-reaching influence on the development of neutrino astrophysics [73, 74, 75]; and the description of how neutrinos oscillate in medium, known as the Mikheyev-Smirnov-Wolfenstein”