X-ray observation of the Jovian impacts of comet Shoemaker - Levy 9 |
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| Authors: | Kentaro Terada Hitoshi Negoro Kiyoshi Hayashida Shunji Kitamoto Hiroshi Tsunemi Hiroshi Oya Takayuki Ono Akira Morioka Yuzuru Tawara Toshifumi Mukai Masahiro Hoshino Toshio Terasawa |
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| Institution: | (1) Department of Earth and Planetary System Science, Faculty of Science, Hiroshima University, Kagamiyama, 724 Higashi Hiroshima, Japan;(2) Department of Earth and Space Science, Faculty of Science, Osaka University 1-1, Machikaneyama-cho, 560 Toyonaka, Osaka, Japan;(3) Department of Astronomy and Geophysics, Faculty of Science, Tohoku University, 990 Aoba Sendai, Japan;(4) Upper Atmosphere and Space Research Laboratory, Tohoku University, 990 Aoba Sendai, Japan;(5) Department of Physics, Faculty of Science, Nagoya University, Furo-cho Chikusa-ku, 464-01 Nagoya, Japan;(6) Institute of Space and Astronautical Science 3-1-1, Yoshinodai, Sagamihara, 229 Kanagawa, Japan;(7) Department of Earth and Planetary Physics, Faculty of Science, Tokyo University 7-3-1, Hongou Bunkyo-ku, 113 Tokyo, Japan |
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| Abstract: | An ASCA observation of the Jovian impact of the comet Shoemaker-Levy 9 is reported. Four impacts of H, L, Q1 and R were observed and four impacts of B, C, G, and Q2 were observed within 60 minutes after their impacts. No significant flaring of X-ray emission was observed. Upper limit X-ray fluxes of 90 % confidence level, averaged 5 minutes just after the impacts, were 2.4 × 10–13 erg sec–1 cm–2, 3.5 × 10–13 erg sec–1 cm–2, 1.6 × 10–13 erg sec–1 cm–2 and 2.9 × 10–13 erg sec–1 cm–2 for the impacts of H, L, Q1 and R, respectively, in the 0.5(0.7 for H and Q1)–10 keV energy range. However, a hint of X-ray enhancement around Jupiter from July 17 to July 19 was detected with about 2  6 × 10–14 erg sec–1 cm–2 in the 0.5–10 keV energy range. |
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| Keywords: | Comet Jupiter X-Ray |
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