太阳大气中的光球亮点

发布时间：2018-02-03 02:20

本文关键词： 太阳光球亮点磁场小尺度　出处：《天文学进展》2012年02期 　论文类型：期刊论文

【摘要】：首先是对太阳光球亮点近年来研究工作的总结。光球亮点是一种发生在太阳光球上宁静区域的的小尺度和短寿命增亮现象,平均直径在100～300knm之间,平均寿命约为几分钟。光球亮点的研究对于光球辐射和磁场性质的认识具有重要意义。过去的观测显示,绝大多数光球亮点的产生和演化与磁场,特别是光球上的小尺度磁场的演化密切相关,比如,两个同极性磁场的合并,或者反极性磁场的对消,或者一个同极性磁场的分裂,均可以促使光球亮点产生或消失。基于这样的观测结果,统计研究了2722个光球亮点(1600A)与光球上偶极磁元的关系,发现大约有1/3的光球亮点出现在偶极磁元中心附近。
[Abstract]:The first part is a summary of the recent research work on the bright spot of the solar bulb, which is a small scale and short life brightening phenomenon that occurs in the quiet area of the solar sphere. The average diameter is between 100knm and 300knm, and the average lifetime is about a few minutes. The study of the luminous bright spots is of great significance to the understanding of the radiation and magnetic properties of the sphere. The generation and evolution of most bright spots are closely related to the evolution of magnetic field, especially the small scale magnetic field on the sphere, for example, the combination of two magnetic fields with polarity, or the elimination of the reverse magnetic field. Or a splitting of a magnetic field of the same polarity can cause the bright spot of the sphere to produce or disappear, based on such observations. The relationship between 2722 optical sphere bright spots 1600A) and dipolar magnetic elements on the optical sphere is studied statistically. It is found that about 1/3 of the optical sphere bright spots occur near the center of the dipolar magnetic elements.
【作者单位】：中国科学院暗物质和空间重点实验室;中国科学院紫金山天文台;中国科学院研究生院;
【基金】：国家自然科学基金(10843005,10833007.10973042) 973计划(2011CB811400)
【分类号】：P182
【正文快照】： 1引言太阳是一颗处于中年阶段的主序恒星，其大气结构由内向外依次可分为光球层、色球层、过渡区和日冕。我们平时用肉眼观察太阳时看到的明亮}」轮就是光球层，其温度约为6xl护K。光球层的厚度不过儿自公里，但却发出比其他层次更强大的可见光辐射，，可以说太阳在可见光波段

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