Data ARchives and Transmission System (DARTS) is a multi-disciplinary space science data archive for, e.g., astrophysics, solar physics, solar-terrestrial physics, lunar and planetary science, and microgravity science. Please read "About DARTS".

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2017-8-29 10:00 -- 13:00 (JST)

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Magnetic field experiment data taken by Sakigake released

At ISAS, we are continuously collecting those data taken by past ISAS missions, and kept at Japanese universities. The dataset of the Interplanetary Magnetic Field experiment (IMF) and Orbit data onboard Sakigake is now available on DARTS. Sakigake, launched in 1985, was one of the twin spacecraft (the other is Suisei) sent to explore Comet Halley approached in 1986; Sakigake became the first Japanese "artificial planet". Three experiments were mounted on Sakigake, Solar-wind ion detector (SOW), Plasma-wave probe (PWP), and Interplanetary magnetic field measurement (IMF). It detected hydromagnetic waves generated by water group ions originating from the comet. Through collaboration with Tohoku Institute of Technology, those precious data kept at the university were made publicly available at DARTS. (Aug 2017)

Plasma waves, sounder, and electron number density data from Ohzora (EXOS-C) and Jikiken (EXOS-B) released

These days, it is getting common that data taken by scientific satellite are archived, and that the data source is required to be expressed explicitly for publication in academic journals. On the other hand, for the past scientific satellites whose project teams were terminated, the data products were often dead-stored in magnetic tapes or old storages in project member's laboratories. Therefore, ISAS is trying to collect those data taken by past ISAS missions and kept in Japanese universities, and release them from DARTS. Plasma waves, sounder, and electron number density data from the Jikiken (launched in 1976) and Ohzora (launched in 1984) satellites, which had been dead-stored for long time, were converted into Common Data Format (CDF), and archived in DARTS, in collaboration with Tohoku university. These data are now released via DARTS/Ohzora and DARTS/Jikiken. They can be displayed, e.g., by Autoplot and SPEDAS as shown in the right-hand side (typical example of echoes from topside ionosphere detected by Ohzora sounder). (May 2017)

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Last Modified: 08 September 2017