The Planetary Science Journal 3(9) 209-209 2022年9月
Abstract
We performed a unique Venus observation campaign to measure the disk brightness of Venus over a broad range of wavelengths in 2020 August and September. The primary goal of the campaign was to investigate the absorption properties of th...
Proton cyclotron waves (PCWs) upstream from Mars are usually interpreted as waves generated by ion/ion instabilities due to the interaction between the solar wind plasma and the pickup protons, originating from the extended hydrogen (H) exosphere ...
Nao Yoshida   Naoki Terada   Hiromu Nakagawa   David A. Brain   Shotaro Sakai   Yuki Nakamura   Mehdi Benna   Kei Masunaga   
Journal of Geophysical Research: Planets 126(11) 2021年11月
We report seasonal and dust-related variations in neutral and ion species (CO2, O, and N2, and CO2+, O2+, O+, and N+, respectively) in the dayside Martian upper atmosphere between altitudes of ∼150 and ∼250 km observed by the Neutral Gas and Ion M...
Monthly Notices of the Royal Astronomical Society 507(4) 4900-4913 2021年9月
<jats:title>Abstract</jats:title>
<jats:p>The flow direction of low-energy ions around comet 67P/Churyumov–Gerasimenko has previously been difficult to constrain due to the influence of the spacecraft potential. The Ion Composition Analyzer of th...
Persson, M.   Futaana, Y.   Ramstad, R.   Schillings, A.   Masunaga, K.   Nilsson, H.   Fedorov, A.   Barabash, S.   
Geophysical Research Letters 48(3) 2021年
The present-day Venusian atmosphere is dry, yet, in its earlier history a significant amount of water evidently existed. One important water loss process comes from the energy and momentum transfer from the solar wind to the atmospheric particles....