Associate for Education and Public Outreach

佐藤 毅彦

サトウ タケヒコ  (Takehiko Satoh)

基本情報

所属
国立研究開発法人宇宙航空研究開発機構 宇宙科学研究所 太陽系科学研究系 教授
総合研究大学院大学 物理科学研究科 宇宙科学専攻 教授
北海道大学 大学院理学院 宇宙理学専攻 客員教授(連携分野)
学位
博士(理学)(1992年4月 東京理科大学)

ORCID ID
 https://orcid.org/0000-0001-9071-5808
J-GLOBAL ID
202001012016475356
researchmap会員ID
R000011886

研究キーワード

 3

論文

 58
  • Takeshi Horinouchi, Toru Kouyama, Masataka Imai, Shin‐ya Murakami, Yeon Joo Lee, Atsushi Yamazaki, Manabu Yamada, Shigeto Watanabe, Takeshi Imamura, Javier Peralta, Takehiko Satoh
    Journal of Geophysical Research: Planets 2024年3月  
  • Tomoya Suda, Takeshi Imamura, Yeon Joo Lee, Atsushi Yamazaki, Takehiko Satoh, Takao M. Sato
    Journal of Geophysical Research: Planets 2023年10月  査読有り
  • Takeshi Horinouchi, Takehiko Satoh, Javier Peralta
    Geophysical Research Letters 2023年1月28日  査読有り
  • Yeon Joo Lee, Antonio García Muñoz, Atsushi Yamazaki, Eric Quémerais, Stefano Mottola, Stephan Hellmich, Thomas Granzer, Gilles Bergond, Martin Roth, Eulalia Gallego-Cano, Jean-Yves Chaufray, Rozenn Robidel, Go Murakami, Kei Masunaga, Murat Kaplan, Orhan Erece, Ricardo Hueso, Petr Kabáth, Magdaléna Špoková, Agustín Sánchez-Lavega, Myung-Jin Kim, Valeria Mangano, Kandis-Lea Jessup, Thomas Widemann, Ko-ichiro Sugiyama, Shigeto Watanabe, Manabu Yamada, Takehiko Satoh, Masato Nakamura, Masataka Imai, Juan Cabrera
    The Planetary Science Journal 3(9) 209-209 2022年9月1日  査読有り
    Abstract We performed a unique Venus observation campaign to measure the disk brightness of Venus over a broad range of wavelengths in 2020 August and September. The primary goal of the campaign was to investigate the absorption properties of the unknown absorber in the clouds. The secondary goal was to extract a disk mean SO2 gas abundance, whose absorption spectral feature is entangled with that of the unknown absorber at ultraviolet wavelengths. A total of three spacecraft and six ground-based telescopes participated in this campaign, covering the 52–1700 nm wavelength range. After careful evaluation of the observational data, we focused on the data sets acquired by four facilities. We accomplished our primary goal by analyzing the reflectivity spectrum of the Venus disk over the 283–800 nm wavelengths. Considerable absorption is present in the 350–450 nm range, for which we retrieved the corresponding optical depth of the unknown absorber. The result shows the consistent wavelength dependence of the relative optical depth with that at low latitudes, during the Venus flyby by MESSENGER in 2007, which was expected because the overall disk reflectivity is dominated by low latitudes. Last, we summarize the experience that we obtained during this first campaign, which should enable us to accomplish our second goal in future campaigns.
  • M. Narita, T. Imamura, Y. J. Lee, S. Watanabe, A. Yamazaki, T. Satoh, M. Taguchi, T. M. Sato, T. Fukuhara, M. Yamada, T. Kouyama, N. Iwagami
    Journal of Geophysical Research: Planets 127(6) 2022年6月  査読有り

MISC

 66

共同研究・競争的資金等の研究課題

 25