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A new technique for comparing solar dynamo models and observations
(EDP Sciences, 2004-12)
We present a new technique suitable for a detailed comparison between solar dynamo models and observations. The method is based on the technique of dynamo spectroscopy proposed by Hoyng & Schutgens (1995) and bi-orthogonal ...
Forecasting the parameters of sunspot cycle 24 and beyond
(Elsevier, 2009-02)
Solar variability is controlled by the internal dynamo which is a non-linear system. We develop a physical-statistical method for forecasting solar activity that takes into account the non-linear character of the solar ...
The influence of planetary attractions on the solar tachocline
(Elsevier, 2012-05)
We present a physical analysis of the occasionally forwarded hypothesis that solar variability, as shown in the various photospheric and outer solar layer activities, might be due to the Newtonian attraction by the planets. ...
Quantifying and specifying the solar influence on terrestrial surface temperature
(Elsevier, 2010-08)
This investigation is a follow-up of a paper in which we showed that both major magnetic components of the solar dynamo, viz. the toroidal and the poloidal ones, are correlated with average terrestrial surface temperatures. ...
Electrodynamics in the low and middle latitude ionosphere: a tutorial
(Elsevier, 2004-03-24)
Electric fields in the low and middle latitude ionosphere result from currents driven internally by neutral winds and gravity, and externally by applied potentials. The resulting internal electric polarization fields arise ...
Toward a dynamo model for the solar tachocline
(Elsevier Science, 2005-12)
The generation of magnetic field on the Sun is caused by a dynamo mechanism, and is related with the differential rotation of the solar interior. Helioseismologic observations show that strong velocity gradients concentrate ...
Modelo não linear de dínamo solar unidimensional
(Universidade Federal de Minas GeraisBrasilICX - DEPARTAMENTO DE FÍSICAPrograma de Pós-Graduação em FísicaUFMG, 2020-03-10)
In this work we study the generation of the large scale magnetic fields observed in cosmic objects using analytical and numerical turbulent mean-field dynamo models. We use a simplified, one-dimensional formulation, with ...
Solar Cycle Propagation, Memory, and Prediction: Insights from a Century of Magnetic Proxies
(IOP Publishing, 2013-04-02)
The solar cycle and its associated magnetic activity are the main drivers behind changes in the interplanetary environment and Earth’s upper atmosphere (commonly referred to as space weather). These changes have a direct ...
An application of a solar-type dynamo model for ϵ Eridani
(Wiley Blackwell Publishing, Inc, 2020-08)
During the last decade, the relation between activity cycle periods and stellar parameters has received special attention. The construction of reliable registries of activity reveals that solar-type stars exhibit activity ...
Numerical simulations of MHD dynamos
(Elsevier, 2005-12)
The generation of magnetic fields in space plasmas and in astrophysics is usually described within the framework of magnetohydrodynamics. Turbulent helical flows produce magnetic fields very efficiently, with correlation ...