| 关于磁尾高能粒子脉冲的一些特性 |
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| 引用本文： | 吴寄萍.关于磁尾高能粒子脉冲的一些特性[J].空间科学学报,1986,6(2):97-101. |
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| 作者姓名： | 吴寄萍 |
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| 作者单位： | 中国科学院空间物理研究所 |
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| 摘 要： | 利用行星际监察卫星IMP-J取得的高能粒子探测数据(质子能档P4:230keV>E>160keV)与极光电激流指数AE作相关分析,在地心太阳磁层坐标下,按照Fairfield关于中性片对地心太阳磁层"赤道面"的偏离模式,把磁尾分成三个区域:中性片区域、低纬区域和高纬区域。结果表明:(1)高能粒子脉冲的平均强度在中性片区域最强,低纬次之,高纬最弱,表明高能粒子脉冲源区在中性片区域;(2)中性片附近,粒子脉冲和AE指数相关最好,达0.59,低纬次之,高纬几乎无相关,表明粒子脉冲与亚暴事件有关,它是磁尾中性片附近磁力线重联产生的感应电场加速的结果;(3)粒子加速区局限于中性片附近的薄层内,与国外结果完全一致。
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| 收稿时间： | 1985-03-28 |
Some Statistical Results about the Energetic Particle Pulses in the Magnetotail |
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| Affiliation: | Institute of Space Physics, Academia Sinica |
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| Abstract: | This paper presents the results of correlation analysis between the data of energetic particle pulses obtained by IMP-Jspacecraft (P4: 230keV>E>160keV) and auroral electrojet index AE. The magnetotail is devided into three regions: neutral sheet region, low latitude region and high latitude region. It is found that: (1) In the neutral sheet region, the average energetic particle fluxes is the highest among all three regions. In the high latitude region the fluxes is the lowest. This indicates that the "source" of energetic particle pulses may be located in the neatral sheet region. (2) The correlation between energetic particle pulses and AEindex is most significant in the neutral sheet region, the correlation coefficient Ris 0.59. In low and high latitude region, Rdecreases sharply. It coincide with the idea that energetic particle pulses event is substorm relevant event, the particles are accelerated by induced electric field caused by magnetic field line reconnection near the neutral sheet region. (3) Accelerated area is limited to a thin layer around neutral sheet, it coincides with Hones results. |
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