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Bringing the Visible Universe into Focus with Robo-AO
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在Shoemaker-Levy 9彗星撞击期间EUVE对木星的观测
Science (New York, N.Y.)
|June 16, 1995
概括
彗星舒迈克-莱维9号对木星的撞击导致中性 (He I) 58.4 nm线亮度暂时增加了十倍. 这种亮度归因于太阳光散射出高海拔撞击羽毛残留物.
科学领域:
- 行星科学 行星科学
- 天文学 天文学
- 空间物理 空间物理
背景情况:
- 1994年7月,Shoemaker-Levy 9彗星碎片化并撞击木星.
- 木星系统对此类能量事件的反应具有重要的科学意义.
研究的目的:
- 为了分析Shoemaker-Levy 9彗星对木星大气层的影响.
- 为了研究木星辐射的变化,特别是中性 (He I) 反响线.
主要方法:
- 利用了来自极端紫外线探测器 (EUVE) 卫星的数据.
- 在彗星碎片撞击之前,期间和之后进行了观测.
- 分析了58.4纳米的He I共振线的强度.
主要成果:
- 对于较大的碎片,观察到58.4纳米He I线亮度在撞击后大约2-4小时暂时增加了10倍.
- 短暂的亮度表明大气中存在显著的干扰.
结论:
- 线亮化的主要解释是太阳光由高海拔撞击羽毛残留物引起的共振散射.
- 电子冲击激发和He的辐射重组被认为是观察到信号的潜在贡献因素.
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