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首页> 外文期刊>Planetary and space science >Astrophysical objects observed by the MESSENGER X-ray spectrometer during Mercury flybys
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Astrophysical objects observed by the MESSENGER X-ray spectrometer during Mercury flybys

机译：在水星飞越过程中，MESSENGER X射线光谱仪观测到的天体物体

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摘要

The MESSENGER spacecraft conducted its first flyby of Mercury on 14th January 2008, followed by two subsequent encounters on 6th October 2008 and 29th September 2009, prior to Mercury orbit insertion on 18th March 2011. We have reviewed MESSENGER flight telemetry and X-ray Spectrometer observations from the first two encounters, and correlate several prominent features in the data with the presence of astrophysical X-ray sources in the instrument field of view. We find that two X-ray peaks, attributed in earlier work to the detection of suprathermal electrons from the Mercury magnetosphere, are likely to contain a significant number of events that are of astrophysical origin. The intensities of these two peaks cannot be explained entirely on the basis of astrophysical sources, and we support the previous suprathermal explanation but suggest that the electron fluxes derived in those studies be revised to correct for a significant astrophysical signal.
机译：MESSENGER航天器于2008年1月14日进行了首次水星飞越，随后在2008年10月6日和2009年9月29日进行了两次相遇，随后于2011年3月18日插入了水星轨道。我们对MESSENGER飞行遥测和X射线光谱仪的观测进行了回顾。从前两次相遇中得出，并将数据中的几个突出特征与仪器视场中存在天体X射线源相关联。我们发现，在较早的工作中，两个X射线峰归因于从水星磁层探测到超热电子，它们可能包含许多天文学的起源事件。这两个峰的强度不能完全根据天体物理学的来源来解释，我们支持先前的超热解释，但建议对那些研究中得到的电子通量进行修正，以校正明显的天体物理学信号。

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  • 来源
    《Planetary and space science》 |2012年第1期|p.28-39|共12页
  • 作者

    N.P. Bannister; G.W. Fraser; S.T. Lindsay; A. Martindale; D.L. Talboys;

  • 作者单位

    Space Research Centre, Department of Physics & Astronomy, University of Leicester, University Road, Leicester LEI 7RH, UK;

    Space Research Centre, Department of Physics & Astronomy, University of Leicester, University Road, Leicester LEI 7RH, UK;

    Space Research Centre, Department of Physics & Astronomy, University of Leicester, University Road, Leicester LEI 7RH, UK;

    Space Research Centre, Department of Physics & Astronomy, University of Leicester, University Road, Leicester LEI 7RH, UK;

    Space Research Centre, Department of Physics & Astronomy, University of Leicester, University Road, Leicester LEI 7RH, UK;

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

    mercury; MESSENGER; X-ray spectrometry; X-ray emissions; astrophysical sources;

    机译：汞;信使;X射线光谱法;X射线发射;天体资源;

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