• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Solar Physics >Post-Eruptive Arcade Formation in the 25 January 2007 CME/Flare Limb Event: Microwave Observations with the RATAN-600 Radio Telescope
【24h】

Post-Eruptive Arcade Formation in the 25 January 2007 CME/Flare Limb Event: Microwave Observations with the RATAN-600 Radio Telescope

机译：2007年1月25日CME /火炬肢事件中的爆发后拱廊形成：用RATAN-600射电望远镜进行微波观测

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A CME/flare event occurred at the eastern limb on 25 January, 2007. Seven successive multi-wavelength scans in the range 1.8 cm – 5.0 cm were obtained with the RATAN-600 radio telescope starting just at the beginning of the post-eruptive arcade formation (30 min after a C6.3 flare peak) and lasting for 3.5 hours. The conditions were favorable to study the off-limb microwave radio source associated with the post-eruptive arcade in different phases of its formation. Microwave radio emission of the arcade was rather intense initially and then considerably decreased; its maximum was co-spatial with the 195 Å Fe xii loop tops. The RATAN-600 total flux spectra of the off-limb radio source were practically flat during the first two hours indicating a predominant contribution of thermal emission. The X-ray spectrum was thermal (according to RHESSI data) at that time. Data available in the meter wavelength range during this phase were indicative of weak non-thermal processes likely due to accelerated particles. However, free – free emission of an isothermal source dominated in microwaves. This is indicative of the presence of a large amount of plasma in the region of arcade formation at the initial stage of the event. The weak microwave emission during the decay phase might be interpreted as the thermal cyclotron emission of the loops in the arcade.
机译：2007年1月25日，东肢发生了一次CME /耀斑事件。RATAN-600射电望远镜在爆发后的拱廊开始时就开始进行了1.8次– 5.0 cm范围内的七次连续多波长扫描。形成（在C6.3耀斑峰值后30分钟），持续3.5小时。这些条件有利于研究与喷发后拱廊形成不同阶段相关的离岸微波无线电源。最初，拱廊的微波无线电发射非常强烈，然后显着下降。它的最大空间与195ÅFe xii环顶鞋同时使用。偏肢无线电源的RATAN-600总通量频谱在最初的两个小时内几乎是平坦的，这表明热量的主要贡献。当时的X射线光谱是热的（根据RHESSI数据）。在此阶段，仪表波长范围内的可用数据表明，可能由于加速的粒子而导致的弱非热过程。但是，在微波中，等温源的自由-自由发射。这表明在事件的初始阶段在拱廊形成区域中存在大量等离子体。衰减阶段中的微弱微波发射可以解释为拱廊中环路的热回旋加速器发射。

著录项

相似文献

  • 外文文献
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号