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首页> 外文会议>Second Solar Cycle and Space Weather Euroconference Sep 24-29, 2001 Vico Equense, Italy >THERMAL AND NONTHERMAL RADIATIONS ON JULY 14, 2000
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THERMAL AND NONTHERMAL RADIATIONS ON JULY 14, 2000

机译：2000年7月14日的热辐射和非热辐射

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摘要

The Yohkoh/HXT data in the event on July 14, 2000 are studied in different sources and time intervals on the basis of Huang (2000). The low energy cutoff of nonthermal electrons is around 20 keV from the data of L and Ml bands, and 30 keV from the data in Ml and M2 bands with error bar of 3-5 keV. The low energy cutoff is decreased during the burst, which is more evident from the data of L and Ml bands (26.5keV - 18 keV). It may be explained by the thermal component is gradually dominated in the decay phase of hard X-ray flares. The low energy cutoff calculated from the data of Ml and M2 bands is fluctuated with a period of one minute, which may support the periodic acceleration in solar flares. The amplitude of the energy fluctuation is about 5 keV. The position of an extrapolated magnetic rope is comparable with the bright soft X-ray arcade as well as the looptop hard X-ray sources. One foot point of the magnetic rope is located in the strongest source of Ml, M2, and H bands, which may be caused by both thermal and nonthermal emissions.
机译：根据Huang（2000）在不同的来源和时间间隔研究了2000年7月14日事件中的Yohkoh / HXT数据。根据L和M1波段的数据，非热电子的低能量截止约为20 keV，而根据M1和M2波段的数据，其非能量电子的截止误差为3-5 keV。从突发期间降低低能量截止，这从L和M1频段（26.5keV-18 keV）的数据中更加明显。可以解释为热成分在硬X射线耀斑的衰减阶段逐渐占主导地位。从M1和M2频带的数据计算出的低能量截止以一分钟的周期波动，这可以支持太阳耀斑的周期性加速。能量波动的幅度约为5 keV。外推式磁力绳的位置与明亮的软X射线拱廊以及弧形硬X射线源相当。磁绳的一个脚点位于M1，M2和H波段的最强源中，这可能是由热辐射和非热辐射共同引起的。

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