Zobrazeno 1 - 10
of 67
pro vyhledávání: '"Sofia, Sabatino"'
We compute the p-mode oscillation frequencies and frequency splittings that arise in a two-dimensional model of the Sun that contains toroidal magnetic fields in its interior.
Comment: 4 pages, 3 figures, in proceedings of GONG2008/SOHO XXI: Sol
Comment: 4 pages, 3 figures, in proceedings of GONG2008/SOHO XXI: Sol
Externí odkaz:
http://arxiv.org/abs/0810.4943
Autor:
Li, Linghuai, Sofia, Sabatino, Ventura, Paolo, Penza, Valentina, Bi, Shaolan, Basu, Sarbani, Demarque, Pierre
In the second paper of this series we pursue two objectives. First, in order to make the code more sensitive to small effects, we remove many approximations made in Paper I. Second, we include turbulence and rotation in the two-dimensional framework.
Externí odkaz:
http://arxiv.org/abs/0810.4938
Publikováno v:
Astrophys.J.623:L147-L150,2005
We show in this paper that the changes of the solar diameter in response to variations of large scale magnetic fields and turbulence are not homologous. For the best current model, the variation at the photospheric level is over 1000 times larger tha
Externí odkaz:
http://arxiv.org/abs/astro-ph/0509816
The simultaneous presence of both the so-called `ultra-fast rotators' and slowly rotating stars among the solar-type stars ($\sim 0.6-1.2 M_{\odot}$) in the same young star clusters has been a puzzle in the field of stellar rotation. No model to date
Externí odkaz:
http://arxiv.org/abs/astro-ph/0101560
Autor:
Sofia, Sabatino, Li, Linghuai H.
Recent precise observations of solar global parameters are used to calibrate an upgraded solar model which takes into account magnetic fields in the solar interior. Historical data about sunspot numbers (from 1500 to the present) and solar radius cha
Externí odkaz:
http://arxiv.org/abs/astro-ph/0010514
Autor:
Sofia, Sabatino, Li, Linghuai H.
Whereas a variation of the solar luminosity, L, will inevitably cause a similar change of the total solar irradiance, S, the opposite is not true. In fact, the bulk of the days to months variations of S can be explained entirely in terms of the passa
Externí odkaz:
http://arxiv.org/abs/astro-ph/0010428
We present the results of a monitoring campaign aimed at deriving rotation periods for a representative sample of stars in the young (30 Myr) open cluster IC 2602. Rotation periods were derived for 29 of 33 stars monitored. The periods derived range
Externí odkaz:
http://arxiv.org/abs/astro-ph/9812168
In an attempt to understand the properties of convective energy transport in the solar convection zone, a numerical model has been constructed for turbulent flows in a compressible, radiation-coupled, non-magnetic, gravitationally stratified medium u
Externí odkaz:
http://arxiv.org/abs/astro-ph/9403046
Publikováno v:
In Advances in Space Research 2005 35(3):329-340
Publikováno v:
Science, 1980 Dec 01. 210(4475), 1243-1245.
Externí odkaz:
https://www.jstor.org/stable/1684481