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pro vyhledávání: '"Pipin, Valery V."'
Solar differential rotation exhibits a prominent feature: its cyclic variations over the solar cycle, referred to as zonal flows or torsional oscillations, are observed throughout the convection zone. Given the challenge of measuring magnetic fields
Externí odkaz:
http://arxiv.org/abs/2402.15647
Publikováno v:
ApJ, 911, 90 (2021)
Using a 3D global solver of the linearized Euler equations, we model acoustic oscillations over background velocity flow fields of single-cell meridional circulation with deep and shallow return flows as well as double-cell meridional circulation wit
Externí odkaz:
http://arxiv.org/abs/2101.01220
We propose a novel approach to reconstruct the surface magnetic helicity density on the Sun or sun-like stars. The magnetic vector potential is determined via decomposition of vector magnetic field measurements into toroidal and poloidal components.
Externí odkaz:
http://arxiv.org/abs/1905.00772
Torsional oscillations represent bands of fast and slow zonal flows around the Sun, which extend deep into the convection zone and migrate during solar cycles towards the equator following the sunspot butterfly diagram. Analysis of helioseismology da
Externí odkaz:
http://arxiv.org/abs/1809.10776
Akademický článek
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Publikováno v:
Progress in Physics of the Sun and Stars: A New Era in Helio- and Asteroseismology. Edited by H. Shibahashi and A.E. Lynas-Gray. ASP Conf. Proc. Vol. 479. 2013, p.395
Helioseismology provides important constraints for the solar dynamo problem. However, the basic properties and even the depth of the dynamo process, which operates also in other stars, are unknown. Most of the dynamo models suggest that the toroidal
Externí odkaz:
http://arxiv.org/abs/1402.1901
Autor:
Pipin, Valery V.
Recently, Jouve et al(A&A, 2008) published the paper that presents the numerical benchmark for the solar dynamo models. Here, I would like to show a way how to get it with help of computer algebra system Maxima. This way was used in our paper (Pipin
Externí odkaz:
http://arxiv.org/abs/0811.4061
Publikováno v:
In Advances in Space Research 15 October 2016 58(8):1490-1496
Publikováno v:
Journal of Space Weather and Space Climate, Vol 11, p 4 (2021)
We briefly review the history of observations of magnetic fields on the Sun, and describe early magnetograps for full disk measurements. Changes in instruments and detectors, the cohort of observers, the knowledge base etc may result in non-uniformit
Externí odkaz:
https://doaj.org/article/79449ce11e894c7faf1328d6bc6e59f1
Helioseismological observations of the internal dynamics of the Sun during the last two solar activity cycles make it possible to trace the development of solar dynamo processes throughout the depth of the convective zone and to link them with models
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::66416d2c5db40007850a88aef31a9303