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セガワ ノリヒサ
SEGAWA NORIHISA
瀬川 典久 所属 京都産業大学 情報理工学部 情報理工学科 職種 教授 |
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| 言語種別 | 英語 |
| 発行・発表の年月 | 2022/02 |
| 形態種別 | 研究論文 |
| 査読 | 査読あり |
| 標題 | Modeling of 3D trajectory of Hayabusa2 re-entry based on acoustic observations |
| 執筆形態 | その他 |
| 掲載誌名 | PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN |
| 掲載区分 | 国外 |
| 出版社・発行元 | OXFORD UNIV PRESS |
| 国際共著 | 国際共著 |
| 著者・共著者 | Yasuhiro Nishikawa,Masa-yuki Yamamoto,Eleanor K. Sansom,Hadrien A. R. Devillepoix,Martin C. Towner,Yoshihiro Hiramatsu,Taichi Kawamura,Kazuhisa Fujita,Makoto Yoshikawa,Yoshiaki Ishihara,Islam Hamama,Norihisa Segawa,Yoshihiro Kakinami,Hiroshi Katao,Yuichiro Inoue,Philip A. Bland |
| 概要 | On 2020 December 5 at 17:28 UTC, Japan Aerospace Exploration Agency's Hayabusa2 sample return capsule (SRC) re-entered Earth's atmosphere. The capsule passed through the atmosphere at supersonic speeds, emitting sound and light. The inaudible sound was recorded by infrasound sensors installed by Kochi University of Technology and Curtin University. Based on analysis of the recorded infrasound, the trajectory of the SRC in two cases, one with constant-velocity linear motion and the other with silent flight, could be estimated with an accuracy of 0.5 in elevation and 1 degrees in direction. A comparison with optical observations suggests a state of flight in which no light is emitted but sound is emitted. In this paper, we describe the method and results of the trajectory estimation. |
| DOI | 10.1093/pasj/psab126 |
| ISSN | 0004-6264/2053-051X |