Numerical Simulations on Unconventional Surface Charging within Deep Cavities in the Solar Wind Plasma.

The present study was supported in part by the Japan Society for the Promotion of Science: JSPS (Grant No. 20K04041), the innovative High-Performance Computing Infrastructure: HPCI (Project No. HP210159), and the Joint Usage/Research Center for Interdisciplinary Large-scale Information Infrastructures: JHPCN (Project No. JH210047) in Japan. The computations in the present study were performed using the KDK system at the Research Institute for Sustainable Humanosphere (RISH), Kyoto University, the supercomputer system at the Information Initiative Center, Hokkaido University, and the ITO system at the Research Institute for Information Technology, Kyushu University, Japan.