用PAMELA任务测量的南大西洋异常质子强度的太阳周期变化
Solar-Cycle Variations of South-Atlantic Anomaly Proton Intensities Measured With The PAMELA Mission
摘要：
根据反物质探测和轻核天体物理学任务有效载荷的测量结果，我们研究了内辐射带下边缘>80 MeV质子通量强度的太阳周期变化。分析的数据样本涵盖了从2006年7月到2014年9月的约8年间隔，因此跨越了第23个太阳周期的衰变阶段到第24个太阳周期的最大阶段。我们探讨了强度的时间变化作为漂移壳层和质子能量的函数，也提供了一个明确的调查在不同的赤道俯仰角的太阳调制效应。PAMELA观测为最高俘获能量下的低空粒子辐射环境建模提供了新的重要约束。
英文摘要：
We present a study of the solar-cycle variations of >80 MeV proton flux intensities in the lower edge of the inner radiation belt, based on the measurements of the Payload for Antimatter Matter Exploration and Light-nuclei Astrophysics (PAMELA) mission. The analyzed data sample covers an ~8 year interval from 2006 July to 2014 September, thus spanning from the decaying phase of the 23rd solar cycle to the maximum of the 24th cycle. We explored the intensity temporal variations as a function of drift shell and proton energy, also providing an explicit investigation of the solar-modulation effects at different equatorial pitch angles. PAMELA observations offer new important constraints for the modeling of low-altitude particle radiation environment at the highest trapping energies.
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