The thermal phase of a large solar flare. [Skylab observations
The thermal phase of a large solar flare. [Skylab observations
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大型太阳耀斑的热阶段。
DOI：
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发表时间：
1978
期刊：
影响因子：
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通讯作者：
G. Withbroe
中科院分区：
文献类型：
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作者：
G. Withbroe
EUV和X射线观测被用来推导差分发射措施，温度，密度，辐射和传导冷却速率，和热能含量的2B级耀斑发生在1973年9月7日。分析结果表明：（1）耀斑等离子体的温度大多在300万度到1000万度之间，峰值温度在3.5小时内从800万K下降到500万K，差分辐射量在几乎所有温度下都随时间稳定下降;（4）辐射和传导都是等离子体在100，000 K以上温度下的重要冷却机制;（5）在耀斑最大值之后，大量的能量，数量级为3x 10的31次方尔格，沉积在耀斑环中。经验确定的耀斑参数进行比较，从一个简单的理论环路模型得出类似的参数。
EUV and X-ray observations are used to derive the differential emission measures, temperatures, densities, radiative and conductive cooling rates, and thermal energy content of a class 2B flare that occurred on September 7, 1973. The results of the analysis indicate that (1) most of the flare plasma was at temperatures between 3 and 10 million degrees; (2) the peak temperature decreased with time from about 8 million K to 5 million K over a period of 3.5 hours; (3) the differential emission measure steadily decreased with time at nearly all temperatures; (4) both radiation and conduction were important cooling mechanisms for the plasma at temperatures above 100,000 K; and (5) a substantial amount of energy, of the order of 3 x 10 to the 31st power ergs, was deposited in the flare loops after flare maximum. The empirically determined flare parameters are compared with similar parameters derived from a simple theoretical loop model.