Spectral structures of high-energy electrons as observed by the Science and Technology Satellite-I (STSAT-1) of Korea

Park, Jaeheung

Spectral structures of high-energy electrons as observed by the Science and Technology Satellite-I (STSAT-1) of Korea

Tuesday, 6 March 2018

Lakehouse (Hotel Quinta da Marinha)

Jaeheung Park¹, Kyoung Wook Min², Jaejin Lee³, Junga Hwang³, Hee-Jun Kim² and Young-Sil Kwak¹, (1)KASI Korea Astronomy and Space Science Institute, Daejeon, South Korea, (2)KAIST Korea Advanced Institute of Science and Technology, Daejeon, South Korea, (3)KASI Korea Astronomy and Space Science Institute, Daejeon, Korea, Republic of (South)

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Abstract:

The Science and Technology Satellite-I (STSAT-1) was launched in September 2003 as the first Korean satellite dedicated to astronomy and space science. The satellite was placed at a Sun-synchronous orbit whose altitude was about 680 km and local time was at 10:45 and 22:45 hours. The Far-Ultraviolet Imaging Spectrograph (FIMS: also known as the Spectroscopy of Plasma Evolution from Astrophysical Radiation, SPEAR) is the main payload of the satellite. In addition, secondary payloads such as Electro-Static Analyzer (ESA), Solid State Telescope (SST), and Scientific Magnetometer (SM) regularly conducted in-situ observations in northern high-latitude regions. In this study we analyze notable spatial/spectral sub-structures present in electron energy spectrograms as observed by the onboard ESA (0.1 keV ~ 20 keV) and SST (170 keV ~ 360 keV).