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An Equivariant 3D model for the long-term behavior of the solar activity
Conference proceeding   Peer reviewed

An Equivariant 3D model for the long-term behavior of the solar activity

C. Letellier, J. Maquet, L. A. Aguirre and R. Gilmore
Experimental Chaos: 7th Experimental Chaos Conference, v 676(1), pp 127-132
19 Aug 2003
DOI: https://doi.org/10.1063/1.1612205

Abstract

Modeling dynamics underlying the sunspot numbers is an important problem because such data indicate the relative activity of the Sun. A key point in modeling sunspot data, which follows an 11‐year cycle, is the need to take into account the reversal of the Sun’s magnetic field, which follows a 22‐year cycle. This can be done using an appropriate coordinate transformation applied to the phase portrait reconstructed from the sunspot numbers. Such a transformation introduces symmetry in the phase portrait and has the advantage of unfolding the structure of the dynamics. Global models have been obtained from such data. It is shown that the models capture the basic dynamical structure underlying the data which appears to be the structure of a Rössler attractor with an additional half twist.

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Collaboration types
Domestic collaboration
Web of Science research areas
Engineering, Electrical & Electronic
Optics
Physics, Mathematical
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