[P-EM11] Dynamics of the Inner Magnetospheric System

[PEM11-02] A constellation of space radiation belt survey program by small satellites

★Invited Papers

*Ji Wu¹、Xiaochao Yang²、Li Deng¹、Maurizio Falanga³、Vladimir Kalegaev⁴、Wen Li⁵、Yoshizumi Miyoshi⁶、Rumi Nakamura⁷、Minna Palmroth⁸、Anatoli Petrukovich⁹、Mohammad Ebrahimi Seyedabadi¹⁰、Yulun Li¹ (1.National Space Science Center, Chinese Academy of Sciences、2.National Space Science Center, Chinese Academy of Science, China; State Key Laboratory of Space Weather、3.International Space Science Institute-Switzerland、4.Lomonosov Moscow State University、5.Boston University、6.Nagoya University、7.Space Research Institute、8.University of Helsinki、9.Space Research Institute (IKI)、10.Asia-Pacific Space Cooperation Organization (APSCO))

キーワード：Earth's radiation belts, small satellite constellation, high time resolution, energetic electrons

The Task Group on establishing a Constellation of Small Satellites (TGCSS) was established by COSPAR in late 2019 to develop an actionable plan for implementing the recommendations of the COSPAR Strategic Action Plan and the COSPAR Scientific Road map on Small Satellites for Space Science. To address the Earth’s radiation belt program, one of several program elements focused on by the TGCSS, a COnstellation of SPAce Radiation belt Survey (COSPARS) program is proposed by the Sub-Group on Radiation Belt (SGRB) of TGCSS. The Earth’s radiation belt is highly dynamic on various timescales from months to minutes. Normally, a full survey of the outer radiation belt by a single spacecraft will take a few hours. The basic idea for the COSPARS mission is to have a constellation of 10-plus small/CubeSats to take an ultra-fast survey of the Earth’s radiation belt. The general science goal for COSPARS is to provide unprecedented high-time resolution measurements of the variations of energetic electrons and related physical processes. The mission profile of (COSPARS) will be introduced. The data set from COSPARS would be of great use for comprehensively understanding the dynamics of magnetospheric energetic populations and developing standard model of the Earth’s radiation belts. From the application perspective, the ultra-fast survey of the radiation belt could be an important facility for monitoring the space weather of Earth as well.