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2020 | OriginalPaper | Buchkapitel

9. Data-Driven MHD Modeling of Coronal Magnetic Evolutions and Eruptions

verfasst von : Xueshang Feng

Erschienen in: Magnetohydrodynamic Modeling of the Solar Corona and Heliosphere

Verlag: Springer Singapore

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Abstract

Solar corona is always in dynamical evolution as driven by the surface motions on the photosphere, which stress the coronal field by shearing, twisting and even braiding in a somewhat random way. Such processes inject continuously magnetic free energy and helicity into the corona, which, however, cannot be reserved forever. As a result, solar eruptions occur from time to time, like a volcanic eruption, which explosively releases the magnetic free energy into other forms like kinetic and thermal energies. As such dynamical process is not included in the force-free field extrapolation models, MHD model, in particular, constrained and even driven by the observed magnetograms, is required to follow the coronal dynamic evolution. Such data-driven MHD models have been recently developed and applied to study the solar active-region evolution as well as its eruption, which offers a new way for understanding sophisticatedly their underlying magnetic topology and mechanism. This chapter briefly presents data-driven CESE–MHD modeling of coronal magnetic evolutions and eruptions.

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Metadaten
Titel
Data-Driven MHD Modeling of Coronal Magnetic Evolutions and Eruptions
verfasst von
Xueshang Feng
Copyright-Jahr
2020
Verlag
Springer Singapore
DOI
https://doi.org/10.1007/978-981-13-9081-4_9

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