首页> 外文期刊>Science >MESSENGER Observations of Transient Bursts of Energetic Electrons in Mercury's Magnetosphere
【24h】

MESSENGER Observations of Transient Bursts of Energetic Electrons in Mercury's Magnetosphere

机译:汞磁层中高能电子的瞬态爆发的信使观测

获取原文
获取原文并翻译 | 示例
       

摘要

The MESSENGER spacecraft began detecting energetic electrons with energies greater than 30 kilo-electron volts (keV) shortly after its insertion into orbit about Mercury. In contrast, no energetic protons were observed. The energetic electrons arrive as bursts lasting from seconds to hours and are most intense close to the planet, distributed in latitude from the equator to the north pole, and present at most local times. Energies can exceed 200 keV but often exhibit cutoffs near 100 keV. Angular distributions of the electrons about the magnetic field suggest that they do not execute complete drift paths around the planet. This set of characteristics demonstrates that Mercury's weak magnetic field does not support Van Allen-type radiation belts, unlike all other planets in the solar system with internal magnetic fields.
机译:MESSENGER航天器在插入水星轨道后不久就开始检测能量大于30千电子伏特(keV)的高能电子。相反,没有观察到高能质子。高能电子以持续数秒至数小时的爆发形式到达,并且在靠近行星时强度最高,从赤道到北极分布在纬度,并且在大多数本地时间出现。能量可以超过200 keV,但通常会在100 keV附近出现截止值。电子围绕磁场的角分布表明它们没有执行围绕行星的完整漂移路径。这组特征表明,水星的弱磁场不支持范艾伦型辐射带,这与太阳系中具有内部磁场的所有其他行星不同。

著录项

  • 来源
    《Science》 |2011年第6051期|p.1865-1868|共4页
  • 作者单位

    The Johns Hopkins University Applied Physics Laboratory,laurel, MD 20723, USA;

    The Johns Hopkins University Applied Physics Laboratory,laurel, MD 20723, USA,;

    The Johns Hopkins University Applied Physics Laboratory,laurel, MD 20723, USA;

    Laboratory for Atmospheric and Space Physics, University of Colorado,Boulder, CO 80303, USA;

    Heliophysics Science Division, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA,Department of Atmospheric, Oceanic and Space Sciences,University of Michigan, Ann Arbor, Ml 48109, USA;

    The Johns Hopkins University Applied Physics Laboratory,laurel, MD 20723, USA;

    The Johns Hopkins University Applied Physics Laboratory,laurel, MD 20723, USA;

    Physics Department, The Catholic University of America, Washington,DC 20064, USA;

    The Johns Hopkins University Applied Physics Laboratory,laurel, MD 20723, USA;

    The Johns Hopkins University Applied Physics Laboratory,laurel, MD 20723, USA;

    Department of Terrestrial Magnetism,Carnegie Institution of Washington, Washington, DC 20015,USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

  • 入库时间 2022-08-18 02:54:10

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