Results 261 to 270 of about 663,853 (299)
Some of the next articles are maybe not open access.
AIP Conference Proceedings, 2008
Solar models are important in our understanding of stars and stellar evolution. Solar models have been constructed using different methods. In this work, a solar model will be built using the fitting method. The model will incorporate the most recent input data.
Lim Yaw Loong +6 more
openaire +1 more source
Solar models are important in our understanding of stars and stellar evolution. Solar models have been constructed using different methods. In this work, a solar model will be built using the fitting method. The model will incorporate the most recent input data.
Lim Yaw Loong +6 more
openaire +1 more source
Standard and Non-Standard Solar Models
Solar Physics, 2001We summarize the physical input and assumptions commonly adopted in modern standard solar models that also produce good agreement with solar oscillation frequencies. We discuss two motivations for considering non-standard models: the solar neutrino problem and surface lithium abundance problem. We begin to explore the potential for mixed core models to
Joyce A. Guzik +5 more
openaire +1 more source
Solar abundances, convection and the standard solar model
2008A new observed Z/X ratio is proposed for the Sun. We apply it to recalibrating the Sun with two different convection theories, the classical MLT and the recent theory of Canuto and Mazzitelli.
A. Noels, N. Grevesse, I. Mazzitelli
openaire +1 more source
Evidence from solar seismology against non-standard solar-core models
Nature, 1990GLOBAL oscillations of the Sun1 have been used to test solar models2, but modelling the oscillation frequencies to their measured accuracies of a few microhertz has proved difficult, mostly owing to ignorance of the structure of the Sun's outer layers3. The frequency separation between closely spaced modes in the acoustic spectrum is expected to depend
Y. Elsworth +4 more
openaire +1 more source
Solar Models with Non-Standard Chemical Composition
Space Science Reviews, 1998The OPAL monochromatic opacity tables are used to evaluate the impact of a non-standard chemical composition on solar models.
S. Turcotte, J. Christensen-Dalsgaard
openaire +1 more source
Matter-enhanced neutrino oscillations in the standard solar model
Physical Review D, 1989The effects of matter-enhanced neutrino oscillations on solar-neutrino experiments can be calculated accurately only if uncertainties in the standard solar model are treated properly. As the oscillation probability depends on the neutrino energy, while modifications in the parameters of the standard solar model produce correlated changes in the various
, Bahcall, , Haxton
openaire +2 more sources
Metallicity, opacity coefficients and the solar standard model
Solar Physics, 1990We discuss the effect of the uncertainties affecting the opacities on the derived characteristics of the Sun. We consider two sources of uncertainty: the relative composition of the Sun at birth and the difference between two opacity calculations. As an illustration, we discuss the effect of the choice of photospheric or meteoritic iron abundance on ...
D. Courtaud +4 more
openaire +1 more source
Shortcomings of the Standard Solar Model
Space Science Reviews, 1998The SSM, invented in early nineteen sixties, remains a useful construction. There are now much larger number of its predictions that may be compared with observations than when it was first introduced. Seismic sounding based on oscillations frequencies provides the best test of the physical input for modelling stellar evolution. The results of the test
openaire +1 more source