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Implications of X-ray Observations for Electron Acceleration and Propagation in Solar Flares

机译:X射线观测对太阳耀斑中电子加速和传播的意义

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摘要

High-energy X-rays and γ-rays from solar flares were discovered just over fifty years ago. Since that time, the standard for the interpretation of spatially integrated flare X-ray spectra at energies above several tens of keV has been the collisional thick-target model. After the launch of the Reuven Ramaty High Energy Solar Spectroscopic Imager (RHESSI) in early 2002, X-ray spectra and images have been of sufficient quality to allow a greater focus on the energetic electrons responsible for the X-ray emission, including their origin and their interactions with the flare plasma and magnetic field. The result has been new insights into the flaring process, as well as more quantitative models for both electron acceleration and propagation, and for the flare environment with which the electrons interact. In this article we review our current understanding of electron acceleration, energy loss, and propagation in flares. Implications of these new results for the collisional thick-target model, for general flare models, and for future flare studies are discussed.
机译:太阳耀斑的高能X射线和γ射线是在五十多年前发现的。从那时起,在数十keV以上的能量下解释空间积分耀斑X射线光谱的标准一直是碰撞厚目标模型。自2002年初推出鲁汶拉米特高能太阳光谱成像仪(RHESSI)之后,X射线光谱和图像的质量足以使人们更加关注引起X射线发射的高能电子,包括它们的起源以及它们与火炬等离子体和磁场的相互作用。结果是对扩口过程有了新的认识,并为电子加速和传播以及与电子相互作用的扩口环境提供了更多的定量模型。在本文中,我们回顾了我们目前对电子加速,能量损失和耀斑传播的理解。讨论了这些新结果对厚目标碰撞模型,一般火炬模型以及未来火炬研究的影响。

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  • 来源
    《Space Science Reviews》 |2011年第4期|p.107-166|共60页
  • 作者单位

    NASA Goddard Space Flight Center, Code 671, Greenbelt, MD, 20771, USA;

    Lockheed Martin Advanced Technology Center, Solar and Astrophysics Laboratory, Organization ADBS, Building 252, 3251 Hanover Street, Palo Alto, CA, 94304, USA;

    Astrophysikalisches Institut Potsdam, Potsdam, Germany;

    Department of Physics &amp Astronomy, University of Glasgow, Glasgow, G12 8QQ, Scotland, UK;

    Harvard-Smithsonian Center for Astrophysics P-148, 60 Garden St., Cambridge, MA, 02138, USA;

    Department of Physics and Astronomy, University of Glasgow, Kelvin Building, Glasgow, G12 8QQ, UK;

    NASA Goddard Space Flight Center, Code 671, Greenbelt, MD, 20771, USA;

    Space Sciences Lab, UC Berkeley, Berkeley, CA, USA;

    Department of Computing and Mathematics, University of Bradford, Bradford, BD7 1DP, UK;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Sun: flares; Sun: X-rays; Gamma rays; Sun: radio radiation;

    机译:太阳:耀斑;太阳:X射线;伽玛射线;太阳:无线电辐射;

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