Results 1 to 10 of about 2,514,674 (303)
The relevance of nuclear reactions for Standard Solar Models construction [PDF]
Frontiers in Astronomy and Space Sciences, 2021 The fundamental processes by which nuclear energy is generated in the Sun have been known for many years. However, continuous progress in areas such as neutrino experiments, stellar spectroscopy and helioseismic data and techniques requires ever more accurate and precise determination of nuclear reaction cross sections, a fundamental physical input for
F.L. Villante, Aldo Serenelli
semanticscholar +9 more sources
Stellar evolution and the Standard Solar Model [PDF]
EPJ Web of Conferences, 2020 This contribution is meant as a very brief introduction to the principal concepts of stellar physics. First the main physical processes active in stellar structures will be shortly described, then the most important features during the stellar life-cycle
Degl’Innocenti Scilla
doaj +5 more sources
The Standard Solar Model [PDF]
International Astronomical Union Colloquium, 1990 AbstractThe main features of standard solar models, the logic of the calculations, and some of the important results concerning solar neutrinos experiments are given. The input parameters that cause the greatest uncertainties in the calculated neutrino fluxes are the nuclear rection rates, the chemical abundances, the radiative opacity, and the ...
John N. Bahcall, M. Cribier
semanticscholar +4 more sources
A Model to Improve the Implementation Standards of Street Lighting Based on Solar Energy: A Case Study [PDF]
Energies, 2020 This paper aims to improve the implementation standards of solar-energy-based street lighting in Indonesia. A model framework was developed to assess existing conditions regarding the level of lux, the distance between poles, pole height, and lamp power.
Wahyudi Sutopo +3 more
doaj +3 more sources
A Standard Model Solution to the Solar Neutrino Problem? [PDF]
arXiv, 1994 An imroved standard solar model, with more accurate input parameters and more accurate treatment of plasma physics effects, predicts a solar neutrino flux which is consistent within experimental uncertainties with the solar neutrino observations after 1986.
Arnon Dar, G. Shaviv
arxiv +5 more sources
Solar neutrinos (almost) without standard solar models [PDF]
arXiv, 1995 We extract information on the fluxes of Be and CNO neutrinos directly from solar neutrino experiments, with minimal assumptions about solar models. Next we compare these results with solar models, both standard and non standard ones. Finally we discuss the expectations for Borexino, both in the case of standard and non standard neutrinos.
G. Fiorentini, B. Ricci
arxiv +5 more sources
Solar neutrinos: beyond standard solar models [PDF]
Phys.Rept.281:309-398,1997, 1996 After a short survey of the physics of solar neutrinos, giving an overview of hydrogen burning reactions, predictions of standard solar models and results of solar neutrino experiments, we discuss the solar-model-independent indications in favour of non-standard neutrino properties.
V. Castellani +4 more
arxiv +8 more sources
A New Generation of Standard Solar Models [PDF]
The Astrophysical Journal, 2017 Abstract 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 ...
Núria Vinyoles +8 more
semanticscholar +7 more sources
Recent Work on Standard Solar Models [PDF]
Nucl. Phys. Proc. Suppl. 31 (1993) 125, 1992 Recent results on standard solar models are reviewed. I shall summarize briefly three of the themes that I stressed at the Neutrino '92 Conference: 1) Different solar model codes give the same answers when the same input data are used; 2) Improved calculations of standard solar models include helium diffusion, the Livermore radiative opacity, the ...
John N. Bahcall
arxiv +7 more sources
Updating standard solar models [PDF]
Astronomy and Astrophysics Supplement Series, 1997 We present an updated version of our standard solar model (SSM) where helium and heavy elements diffusion is included and the improved OPAL equation of state (Rogers 1994, Rogers Swenson \& Iglesias 1996) is used. In such a way the EOS is consistent with the adopted opacity tables, from the same Livermore group, an occurrence which should further ...
F. Ciacio, S. Degl’Innocenti, B. Ricci
semanticscholar +7 more sources