日本地球惑星科学連合2014年大会

講演情報

口頭発表

セッション記号 P (宇宙惑星科学) » P-CG 宇宙惑星科学複合領域・一般

[P-CG38_1PM2] 惑星大気圏・電磁圏

2014年5月1日(木) 16:15 〜 18:00 423 (4F)

コンビーナ:*今村 剛(宇宙航空研究開発機構 宇宙科学研究本部)、関 華奈子(名古屋大学太陽地球環境研究所)、高橋 幸弘(北海道大学・大学院理学院・宇宙理学専攻)、高橋 芳幸(惑星科学研究センター)、深沢 圭一郎(九州大学情報基盤研究開発センター)、中川 広務(東北大学 大学院理学研究科 地球物理学専攻太陽惑星空間物理学講座 惑星大気物理学分野)、座長:中川 広務(東北大学 大学院理学研究科 地球物理学専攻太陽惑星空間物理学講座 惑星大気物理学分野)

17:30 〜 17:45

[PCG38-P12_PG] Hisaki/EXCEEDと地上望遠鏡によるイオプラズマトーラスの協調観測

ポスター講演3分口頭発表枠

*鍵谷 将人1Andrew Steffl2Badman Sarah3 (1.東北大学、2.Southwest Research Institute、3.University of Leicester)

キーワード:Hisaki/EXCEED, イオプラズマトーラス

EXCEED is an EUV spectrograph onboard an earth-orbiting space telescope, Hisaki(SPRINT-A). One of the primal mission goal of Hisaki/EXCEED is to reveal radial transport of mass and energy in the Jovian magnetosphere. At the begging of January 2014, intense campaign observations of Jovian aurora and Io plasma torus were made using Hisaki/EXCEED, Hubble Space Telescope and other ground-based telescopes covering wavelength range from EUV through IR. We will present results of spectroscopic observation of Io plasma torus using the R.C. spectrograph attached to Kitt-Peak 4-meter telescope and an Echelle spectrograph attached to Haleakala 40-cm telescope.
The 4-meter R.C. Spectrograph was set up covering 550nm through 800nm which could successfully detect NaD (589nm), SIII 631.2nm, SII 671.6/673.1nm, and OII 731.9/733.0nm as well. A field-of-view was 98 arcseconds along the slit and the slit center was pointed at the dawn or dusk edge of the centrifugal equator. We could get 54 spectra from the observation during January 4th through 10th, 2014.
The Haleakala spectrograph is a high-resolution echelle spectrograh with an integrated field unit (IFU) which enables to capture 2-d distribution of [SII] 671.6/673.1nm emission with spectral resolution of 67000 over a field-of-view of 41'' by 61''. The 40-cm telescope was observing Io plasma torus all over the night during the observing campaign period.
Based on preliminary analysis of the EUV spectrum from EXCEED/Hisaki, visible spectrum from Kitt-Peak 4-meter and Haleakala 40-cm, emission peaks of SIII and OII was located outward compared to the SII emission peak which is consistent with results from previous studies. More accurate analysis including pointing calibration and flux calibration are ongoing, the result will be presented at the meeting.