Ionizing Radiation in the Martian Atmosphere during Young Sun.

Yosuke Alexandre Yamashiki1, Hiroyuki Maehara2, Yuta Notsu3, Tatsuhiko Sato4, Vladimir Airapetian5, Shota Notsu3 and Kazunari Shibata6, (1)Yamashiki Laboratory Graduate School of Advanced Integrated Studies in Human Survivability Kyoto University, Gokasho Uji, Japan, (2)NAOJ, Subaru Telescope Okayama Branch Office, Asakuchi, Japan, (3)Kyoto University, Department of Astronomy, Kyoto, Japan, (4)Japan Atomic Energy Agency, Tokai, Japan, (5)SEEC/NASA Goddard Space Flight Center & American University, DC, SEEC, Greenbelt, MD, United States, (6)Kyoto University, Kyoto, Japan