Soft Proton Fluxes In And Around The Earth'S Magnetotail
IEEE TRANSACTIONS ON PLASMA SCIENCE(2017)
摘要
The second L-class (large) mission in European Space Agency's Cosmic Vision program will be an X-ray telescope named Athena, planned to operate at the L2 Lagrange point of the Sun-Earth system. Current large X-ray space telescopes like XMM-Newton and Chandra have encountered periods of unexpectedly high background due to protons in the energy range from 10 keV to 1 MeV (called "soft protons" hereafter). This is an important issue for Athena, as no X-ray telescope has been deployed at L2 so far and the soft proton environment there is poorly known. We analyze data from the Artemis and Advanced Composition Explorer spacecraft and find that fluxes of both solar and geomagnetospheric origin significantly contribute to the soft proton populations in earth's magnetotail. We then estimate the background from the measured fluxes in Athena's X-ray instruments and compare it with the science requirement. Our findings reinforce the argument for developing a means to suppress the soft proton flux before it reaches the detectors such as with a magnetic diverter.
更多查看译文
关键词
Ions, protons, space radiation
AI 理解论文
溯源树
样例
![](https://originalfileserver.aminer.cn/sys/aminer/pubs/mrt_preview.jpeg)
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要