3 papers
astro-ph.SR2025
Empirical Optimization of the Source-Surface Height in the PFSS extrapolation
Munehito Shoda, Kyogo Tokoro, Daikou Shiota +1
The potential field source surface (PFSS) method is a widely used magnetic field extrapolation technique in the space weather community. The only free parameter in the PFSS method…
astro-ph.SR2025
Comparison of Polar Magnetic Fields Derived from MILOS and MERLIN Inversions with Hinode/SOT-SP Data
Masahito Kubo, Daikou Shiota, Yukio Katsukawa +8
The detailed investigation of the polar magnetic field and its time evolution is one of the major achievements of Hinode. Precise measurements of the polar magnetic field are essen…
astro-ph.SR2024
The Solar and Geomagnetic Storms in May 2024: A Flash Data Report
Hisashi Hayakawa, Yusuke Ebihara, Alexander Mishev +16
In May 2024, the scientific community observed intense solar eruptions that resulted in a great geomagnetic storm and auroral extension, highlighting the need to document and quant…