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首页> 外文期刊>PASJ: Publications of the Astronomical Society of Japan >Center-to-limb variation of radio emissions from thermal-rich and thermal-poor solar flares
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Center-to-limb variation of radio emissions from thermal-rich and thermal-poor solar flares

机译：富热量和贫热量的太阳耀斑的无线电发射的中心到边缘变化

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摘要

A statistical analysis of radio flare events was conducted by using the event list of Nobeyama Radioheliograph in the years 1996-2009. We examined center-to-limb variations of 17GHz and 34GHz fluxes by dividing the flare events into different groups according to the "thermal plasma richness" (ratio of the peak flux of soft X-ray to nonthermal radio emissions) and the duration of radio bursts. It was found that the peak flux at 17 and 34GHz tended to be higher toward the limb for thermal-rich flares with short durations. We propose that the thermal-rich flares, which are supposed to be associated with an efficient precipitation of high-energy particles into the chromosphere, have a pitch-angle distribution of nonthermal electrons with a higher population along the flare loop.
机译：利用1996-2009年的Nobeyama Radioheliograph的事件清单对无线电耀斑事件进行了统计分析。我们根据“热等离子体富集度”（软X射线的峰值通量与非热无线电发射的比值）和无线电的持续时间，将耀斑事件分为不同的组，研究了17GHz和34GHz通量的中心到边缘变化。爆发。研究发现，对于持续时间短的富含热量的耀斑，在17和34GHz处的峰值通量趋向于更高的四肢。我们提出，应该与高能粒子有效沉淀到色球层中有关的富热火炬，其非火力电子的螺距角分布沿火炬环路具有更高的分布。

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