[P-PS01] Outer Solar System Exploration Today, and Tomorrow

[PPS01-07] Jupiter's decametric radio common observation campaign from KOSEN-1 and ground-based radio telescopes

*Masafumi Imai¹, Kazumasa Imai², Nobuto Hirakoso³, Yusuke Ito³, Tatsuya Sugawara³, Sota Suzuki³, Masanori Nishio⁴, Taku Takada⁵, Kentarou Kitamura⁶, Jun Nakaya⁷, Yukikazu Murakami⁸, Masahiro Tokumitsu⁹, Makoto Wakabayashi¹, KOSEN-1 Team¹⁰ (1.National Institute of Technology, Niihama College, 2.National Institute of Technology, Kochi College, 3.National Institute of Technology, Gunma College, 4.Aichi University of Technology, 5.Tokyo Metropolitan College of Industrial Technology, 6.Kyushu Institute of Technology, 7.National Institute of Technology, Gifu College, 8.National Institute of Technology, Kagawa College, 9.National Institute of Technology, Yonago College, 10.National Institute of Technology)

Keywords:CubeSat, Jupiter, KOSEN-1

Since its launch on November 9, 2021, KOSEN-1 has maintained its polar orbit around Earth, communicating the telemetry data with seven college-based ground-tracking stations in Japan. KOSEN-1 is the first 2U CubeSat developed by 10 colleges of the National Institute of Technology (NIT) in Japan. This CubeSat is equipped with a software-defined radio (SDR) receiver that can monitor the electric fields of the waves around 20 MHz by means of a 6.6-m long dipole antenna. The SDR receiver can provide both waveforms and spectra in a 2-MHz bandwidth depending upon the available telemetry to the ground, while the timing of the records is synchronized with the GPS 1 Pulse-Per-Second. The scientific mission from KOSEN-1 is to observe Jupiter's decametric (DAM) radiation in conjunction with ground-based radio telescopes around the world. As one of the KOSEN-1 supporting radio telescopes, we have developed a new small-size radio telescope (LWA-Niyodo), consisting of a couple of the bowtie dipoles in the Shikoku Mountains. The receiver system of LWA-Niyodo follows the hierarchy of the same system onboard KOSEN-1 as an initial phase. In this presentation, we will review the radio observation system onboard KOSEN-1 and the specification of LWA-Niyodo, and show the plan of Jupiter's DAM radio common observation campaign with KOSEN-1 and ground-based radio telescopes in 2022.