Jupiter possesses an exceptionally strong magnetic field, and within its magnetosphere lies a vast distribution of plasma released...

We focus on the volcanically active Io and the icy moon Europa. Sulfur and oxygen ions generated from...

Jupiter’s polar regions exhibit auroral emissions with complex structures. The “footprint aurora” associated with Europa is a signature...

In this study, we focus on the refraction of planetary radio emissions as they pass through the ionospheres...

Jupiter’s synchrotron radiation (JSR) is emitted from the high-energy electrons trapped in the Jupiter’s radiation belts. Its intensity...

I analyze the Martian lower atmosphere conditions from OMEGA observation data, which is a near-infrared imaging spectrometer onboard...

We are developing a near-infrared camera (TOPICS) and a high-dispersion Echelle spectrograph (wavelength resolution ~20,000) for near-infrared observations...

We observe auroral emissions from both space and ground, and combine them with satellites and ground-based radar to...

Venus is believed to have once possessed a substantial amount of water, but today it is an extremely...

Mercury has a tenuous atmosphere containing alkali metals. In particular, the neutral sodium emission is bright and suitable...