| 海尔-波普彗星离子尾的间断和波动 |
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| 引用本文： | 汪琦, 杨捷兴, 张春生, 吴月珍, 王玟. 海尔-波普彗星离子尾的间断和波动[J]. 空间科学学报, 1999, 19(3): 284-288. doi: 10.11728/cjss1999.03.284 |
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| 作者姓名： | 汪琦 杨捷兴 张春生 吴月珍 王玟 |
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| 作者单位： | 中国科学院紫金山天文台, 南京 210008 |
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| 摘 要： | 给出海尔-波普彗星近日点附近大尺度观测的结果.指出:1997年2月16、17和18日海尔-波普彗星等离子尾部分有断尾事件发生.观测时刻的离子尾内物质运动速度约为50km／s;离子尾射线向主尾主轴的并拢速度约为0.080'／s.1997年3月3日海尔-波普彗星离子尾有波动现象发生.波动发生在距离彗星密度中心约130×104km,偏离主轴30°处,振幅约20×104km、其离子束宽度约8×104km、波动的相速度约为200km／s.
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| 关 键 词： | 彗星 离子尾 断尾 波动 |
| 收稿时间： | 1998-08-17 |
| 修稿时间： | 1999-05-23 |
THE DISCONNECTION AND RIPPLING OF THE ION TAIL OF COMET HALE-BOPP |
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| WANG Qi, YANG Jiexing, ZHANG Chunsheng, WU Yuezhen, WANG Min. THE DISCONNECTION AND RIPPLING OF THE ION TAIL OF COMET HALE-BOPP[J]. Chinese Journal of Space Science, 1999, 19(3): 284-288. doi: 10.11728/cjss1999.03.284 |
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| Authors: | WANG Qi YANG Jiexing ZHANG Chunsheng WU Yuezhen WANG Min |
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| Affiliation: | Purple Mountain Observatory, The Chinese Academy of Sciences, Nanjing 210008 |
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| Abstract: | The observations of the large scale structure of Comet Hale-Bopp made around perihelion at Purple Mountain Observatory lead to the following results: 1) Some disconnection events occurred on Feb. 16, 17 and 18 in 1997. From these images it is concluded that the moving velocity of matter within the ion tail is about 50 km/s and the closing speed of a ray toward the main tail axis is 0.080'/s during the corresponding period of observations. 2) There is a rippling appeared in a beam of ion tail on March 3, 1997. Its phase velocity is about 200 km/s and its amplitude is about 0.2 million km. The width of this ion beam is 0.08 million km. The relevant data are obtained by means of PDS measurement. |
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| Keywords: | Comet Ion tail Disconnection Rippling |
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