February 27, 2023 to March 2, 2023
Europe/Oslo timezone

Understanding the formation of flare-productive active regions using realistic flux emergence simulations

Mar 2, 2023, 5:10 PM
Invited Talk Flares and Eruptions Flares and Eruptions


Shin Toriumi (Japan Aerospace Exploration Agency)


Solar active regions are thought to be formed by the emergence of magnetic flux from the deep convection zone and, therefore, it is important to use a large computational domain covering the entire convection zone to understand the physics behind. However, the high acoustic speed makes it difficult to conduct magnetohydrodynamic simulations in such a deep domain. The R2D2 code overcomes this difficulty by implementing the reduced sound of speed technique, which allows us to conduct the simulations of active region formation in a much more realistic way. In this presentation, we will discuss how the large-scale convections in the deep layers affect the flux emergence process and contribute to the formation of complex-shaped active regions, which are prone to produce massive solar flares and coronal mass ejections.

Primary author

Shin Toriumi (Japan Aerospace Exploration Agency)

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