卫星黑子衰减触发的喷流事件
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1.南京师范大学附属中学南京210036;2.南京师范大学附属中学树人学校南京210036;3.中国科学院紫金山天文台南京210033;4.中国科学院暗物质和空间天文重点实验室南京210033)

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\hangafter 1 \hangindent 2.5em 国家自然科学基金项目(11473071、11333009、11790302、U1731241), 中国科学院百人计划和中国科学院空间科学战略性先导科技专项(XDA15052200、XDA15320301)资助


A Solar Jet Triggered by a Decaying Satellite Sunspot
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1. High School Affiliated to Nanjing Normal University, Nanjing 210036;2. High School Affiliated to Nanjing Normal University Shuren Campus, Nanjing 210036;3. Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210033;4. Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210033;

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    摘要:

    详细分析了一次太阳低层大气磁场重联触发的喷流事件. 这次喷流发生在2014年8月1日, 爆发自美国国家海洋和大气管理局(National Oceanic and Atmospheric Administration, NOAA)活动区12127边缘的一个卫星黑子处. 该喷流爆发包括日浪、紫外喷流、极紫外高温和低温喷流. 大熊湖太阳天文台(Big Bear Solar Observatory, BBSO)的Goode Solar Telescope (GST)高分辨率氧化钛(TiO)谱线的光球观测显示, 喷流爆发过程中, 卫星黑子一直衰减. 到喷流结束, 卫星黑子面积共减少了80%. 在此过程中, 太阳动力学天文台(Solar Dynamics Observatory, SDO)日球磁场成像仪(Helioseismic and Magnetic Imager, HMI)的视向磁场观测表明, 该卫星黑子对应的负极磁场与相邻的正极磁场发生明显对消, 产生喷流足部亮点. 根据SDO卫星太阳大气成像仪(Atmospheric Imaging Assembly, AIA)的多波段观测, 该足部亮点首先出现在紫外1600{\AA

    Abstract:

    In this paper, we analyze in detail a solar jet event triggered by magnetic reconnections in the lower atmosphere of the Sun. On 1 August 2014, the solar jet occurred at a satellite sunspot on the edge of the National Oceanic and Atmospheric Administration (NOAA) active region 12127. It was composed of an Hα surge, an ultra-violet (UV) jet, and Extra Ultra-violet (EUV) hot, and cool jets. The TiO images taken by the Goode Solar Telescope (GST) at the Big Bear Solar Observatory (BBSO) show that the satellite sunspot has successively decayed during the solar jet, and its area reduced by 80$%$ till the end of the jet. Line-of-sight photospheric magnetic field observations by the Helioseismic and Magnetic Imager (HMI) onboard the Solar Dynamics Observatory (SDO) show that the negative magnetic polarity corresponding to the satellite sunspot was obviously cancelled with the adjacent positive magnetic field, which might result in the brightenings of the jet footpoint source. According to the observations by the Atmospheric Imaging Assembly (AIA) onboard SDO, the footpoint brightenings firstly appeared at 1600{\AA

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左子豪,李易,沙峻辉,周团辉.卫星黑子衰减触发的喷流事件[J].天文学报,2019,60(6):105-115.

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  • 收稿日期:2019-05-05
  • 最后修改日期:2019-07-17
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  • 在线发布日期: 2019-12-05
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