禁戒高能电子作为X射线和gamma-ray观测的背景源
On forbidden high-energy electrons as a source of background in X-ray and gamma-ray observations
摘要：
这项研究专门探讨电子对低轨道卫星上的X射线和伽马射线天体物理测量造成的污染问题。我们分析了2003年至2005年期间，在赤道和低纬度观测到的NOAA/POES低轨道卫星舰队在能量范围100 - 300 keV的电子通量增强。结果发现，在磁暴期间和/或磁层强压缩下，内辐射带以下禁区内100-300 keV电子通量增强了几个数量级。增强与高亚暴活动有关，并发生在任何当地时间。在低纬度和低高度轨道上，禁区内高能电子的强通量可以被认为是X射线和γ射线测量的重要污染物。
英文摘要：
The study is devoted to a problem of electron-induced contaminant to X-ray and gamma-ray astrophysical measurements on board low-orbiting satellites. We analyzed enhancements of electron fluxes in energy range 100 - 300 keV observed at equatorial and low latitudes by a fleet of NOAA/POES low-orbiting satellites over the time period from 2003 to 2005. It was found that 100-300 keV electron fluxes in the forbidden zone below the inner radiation belt enhanced by several orders of magnitude during geomagnetic storms and/or under strong compressions of the magnetosphere. The enhancements are related to high substorm activity and occurred at any local time. Intense fluxes of the energetic electrons in the forbidden zone can be considered as an essential contaminant to X-ray and gamma-ray measurements at low-latitude and low-altitude orbits.
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