首页> 外文期刊>Plasma physics and controlled fusion >Particle acceleration in solar flares: observations versus numerical simulations
【24h】

Particle acceleration in solar flares: observations versus numerical simulations

机译:太阳耀斑中的粒子加速度:观测与数值模拟

获取原文
获取原文并翻译 | 示例
       

摘要

Solar flares are generally agreed to be impulsive releases of magnetic energy. Reconnection in dilute plasma is the suggested trigger for the coronal phenomenon. It releases up to 10(26) J, accelerates up to 10(38) electrons and ions and must involve a volume that greatly exceeds the current sheet dimension. The Ramaty High-Energy Solar Spectroscopic Imager satellite can image a source in the corona that appears to contain the acceleration region and can separate it from other x-ray emissions. The new observations constrain the acceleration process by a quantitative relation between spectral index and flux. We present recent observational results and compare them with theoretical modelling by a stochastic process assuming transit-time damping of fast-mode waves, escape and replenishment. The observations can only be fitted if additional assumptions on trapping by an electric potential and
机译:太阳耀斑通常被认为是电磁能的脉冲释放。稀释血浆中的重新连接是冠状现象的建议触发因素。它释放高达10(26)的J,加速高达10(38)的电子和离子,并且所涉及的体积必须大大超过当前的工作表尺寸。 “ Ramaty”高能太阳光谱成像仪卫星可以对日冕中的一个似乎包含加速区域的源成像,并将其与其他X射线发射区分开。新的观测结果通过光谱指数和通量之间的定量关系来约束加速过程。我们介绍了最近的观测结果,并通过一个随机过程将它们与理论模型进行了比较,假设该过程是快速模式波的传播时阻尼,逃逸和补给。只有在关于电势和势阱的附加假设的情况下,才能拟合观察结果。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
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