...
首页> 外文期刊>Planetary and space science >The space environment of Mercury at the times of the second and third MESSENGER flybys
【24h】

The space environment of Mercury at the times of the second and third MESSENGER flybys

机译:水星在第二次和第三次信使飞越时的空间环境

获取原文
获取原文并翻译 | 示例
           

摘要

The second and third flybys of Mercury by the MESSENGER spacecraft occurred, respectively, on 6 October 2008 and on 29 September 2009. In order to provide contextual information about the solar wind properties and the interplanetary magnetic field (IMF) near the planet at those times, we have used an empirical modeling technique combined with a numerical physics-based solar wind model. The Wang-Sheeley-Arge (WSA) method uses solar photospheric magnetic field observations (from Earth-based instruments) in order to estimate the inner heliospheric radial flow speed and radial magnetic field out to 21.5 solar radii from the Sun. This information is then used as input to the global numerical magnetohydrodynamic model, ENLIL, which calculates solar wind velocity, density, temperature, and magnetic field strength and polarity throughout the inner heliosphere. WSA-ENLIL calculations are presented for the several-week period encompassing the second and third flybys. This information, in conjunction with available MESSENGER data, aid in understanding the Mercury flyby observations and provide a basis for global magnetospheric modeling. We find that during both flybys, the solar wind conditions were very quiescent and would have provided only modest dynamic driving forces for Mercury's magnetospheric system.
机译:信使号航天器分别于2008年10月6日和2009年9月29日发生了水星的第二次和第三次飞越。为了提供有关当时太阳风属性和行星附近的行星际磁场(IMF)的上下文信息,我们使用了经验建模技术,并结合了基于数值物理学的太阳风模型。 Wang-Sheeley-Arge(WSA)方法使用太阳光层磁场观测(来自地基仪器)来估计内部太阳圈的径向​​流速和径向磁场,直到太阳的太阳半径为21.5。然后,此信息将用作全局数值磁流体动力学模型ENLIL的输入,该模型计算整个内部日球层的太阳风速度,密度,温度以及磁场强度和极性。 WSA-ENLIL计算涵盖了第二和第三次飞越,为期数周。该信息与可用的MESSENGER数据一起,有助于理解水星飞越观测,并为全球磁层建模提供基础。我们发现,在两次飞越过程中,太阳风条件都非常静止,并且只会为水星的磁层系统提供适度的动态驱动力。

著录项

  • 来源
    《Planetary and space science》 |2011年第15期|p.2066-2074|共9页
  • 作者单位

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

    Computational and Data Sciences, George Mason University, Fairfax, VA 22030, USA, Heliophysics Science Division, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA;

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

    Air Force Research Laboratory, Kirtland Air Force Base, NM 87117-5776, USA;

    Solar System Exploration 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;

    National Oceanic and Atmospheric Administration, Boulder, CO 80303, USA;

    Department of Atmospheric, Oceanic and Space Sciences, University of Michigan, Ann Arbor, Ml 48109, USA;

    Institute of Geophysics and Planetary Physics, University of California, Los Angeles. CA 90095-1567, USA;

    Heliophysics Science Division, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA;

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

    Institute of Geophysics and Planetary Physics, University of California, Los Angeles. CA 90095-1567, USA, Astronomical Institute and Institute of Atmospheric Physics, ASCR, 14131 Prague, Czech Republic;

    Department of Atmospheric, Oceanic and Space Sciences, University of Michigan, Ann Arbor, Ml 48109, USA;

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

    mercury; solar wind; interplanetary magnetic field; magnetospheres; MESSENGER;

    机译:汞;太阳风;行星际磁场磁层;信使;

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