Dependence of sunspot appearance on the deep structure

Akito Ishikura; Hideyuki Hotta

Presentation information

[J] Oral

M (Multidisciplinary and Interdisciplinary) » M-GI General Geosciences, Information Geosciences & Simulations

[M-GI40] Development of computational sciences on planetary formation, evolution and surface environment

convener:Yoshi-Yuki Hayashi(Department of Planetology/CPS, Graduate School of Science, Kobe University), Masaki Ogawa(Division of General Systems Studies, Graduate School of Arts and Sciences, University of Tokyo), Shigeru Ida(Earth-Life Science Institute, Tokyo Institute of Technology), Kanya Kusano(Institute for Space-Earth Environmental Research, Nagoya University)

[MGI40-02] Dependence of sunspot appearance on the deep structure

*Akito Ishikura¹, Hideyuki Hotta² (1.Graduate School of Science and Engineering, Chiba University, 2.Graduate School of Science, Chiba University)

Keywords:Sun, Sunspot

We carry out a parameter survey of the sunspot with using radiative magnetohydrodynamic simulations. We investigated the influence of the shape of the sunspot magnetic field structure in the solar deep layer on the physical quantity on the solar surface. The sunspot is the most prominent phenomena at the solar surface. Rempel (2012) carried out the sunspot simulation and discussed the influence of the numerical resolution and the upper boundary condition of the magnetic field. However, parameter survey has not been conducted to investigate the influence of the magnetic field shape of the sunspot model on the observed quantity. In this study, we use R2D2 (Hotta et al. 2019), a radiative magnetohydrodynamic simulation code. We change the magnetic field strength about 5 Mm below the solar surface and discuss the influence. We find that the inclination of the magnetic field at the solar surface is not affected by the magnetic field strength deep in the sunspot.