The ARASE (ERG) magnetic field investigation

• Matsuoka, Ayako

  Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency

• Teramoto, Mariko

  Institute for Space-Earth Environmental Research, Nagoya University

• Nomura, Reiko

  Environmental Test Technology Unit, Japan Aerospace Exploration Agency

• Nosé, Masahito

  Data Analysis Center for Geomagnetism and Space Magnetism, Graduate School of Science, Kyoto University

• Fujimoto, Akiko

  International Center for Space Weather Science and Education, Kyushu University

• Tanaka, Yoshimasa

  National Institute of Polar Research, Tachikawa-shi

• Shinohara, Manabu

  National Institute of Technology, Kagoshima College

• Nagatsuma, Tsutomu

  National Institute of Information and Communications Technology

• Shiokawa, Kazuo

  Institute for Space-Earth Environmental Research, Nagoya University

• Obana, Yuki

  Department of Engineering Science, Faculty of Engineering, Osaka Electro-Communication University

• Miyoshi, Yoshizumi

  Institute for Space-Earth Environmental Research, Nagoya University

• Mita, Makoto

  Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency

• Takashima, Takeshi

  Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency

• Shinohara, Iku

  Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency

Abstract

The fluxgate magnetometer for the Arase (ERG) spacecraft mission was built to investigate particle acceleration processes in the inner magnetosphere. Precise measurements of the field intensity and direction are essential in studying the motion of particles, the properties of waves interacting with the particles, and magnetic field variations induced by electric currents. By observing temporal field variations, we will more deeply understand magnetohydrodynamic and electromagnetic ion-cyclotron waves in the ultra-low-frequency range, which can cause production and loss of relativistic electrons and ring-current particles. The hardware and software designs of the Magnetic Field Experiment (MGF) were optimized to meet the requirements for studying these phenomena. The MGF makes measurements at a sampling rate of 256 vectors/s, and the data are averaged onboard to fit the telemetry budget. The magnetometer switches the dynamic range between ± 8000 and ± 60, 000 nT, depending on the local magnetic field intensity. The experiment is calibrated by preflight tests and through analysis of in-orbit data. MGF data are edited into files with a common data file format, archived on a data server, and made available to the science community. Magnetic field observation by the MGF will significantly improve our knowledge of the growth and decay of radiation belts and ring currents, as well as the dynamics of geospace storms.

Journal

• Earth, Planets and Space

  Earth, Planets and Space 70 43-, 2018-03-14

  Springer Nature

Keywords

• EMIC wave
• Geospace
• Magnetic field
• Magnetometer
• Radiation belts
• Ring current
• ULF wave

Details

• CRID: 1050282813184511232
• NII Article ID: 120006537088
• ISSN: 18805981
• DOI: 10.1186/s40623-018-0800-1
• HANDLE: 2433/235014
• Web Site: http://link.springer.com/content/pdf/10.1186/s40623-018-0800-1.pdf
• Web Site: http://link.springer.com/article/10.1186/s40623-018-0800-1/fulltext.html
• Text Lang: en
• Article Type: journal article
• Data Source:
  • IRDB
  • Crossref
  • CiNii Articles
  • KAKEN
  • JaLC