论文标题
部分可观测时空混沌系统的无模型预测
Towards precision particle background estimation for future X-ray missions: correlated variability between Chandra ACIS and AMS
论文作者
论文摘要
许多未来的X射线观测值的科学目标是通过深度暴露微弱的扩散来源绘制宇宙网络。这样的观察需要较低的背景，并且对剩余未否决的背景的最佳知识。对以上1-2 KEV的背景的主要贡献来自银河宇宙射线质子。它们的通量和频谱是由太阳周期和太阳能在较短的时间尺度上调节的。了解这种变异性可能对减少ESA的雅典娜X射线观测站和其他具有较大收集区域的任务的背景不确定性至关重要。我们检查了ACI在Chandra X射线天文台上测量的粒子背景的可变性，并将该变异性与Alpha磁性光谱仪（AMS）测量的变异性（ISS上的精确粒子检测器）进行了比较。我们表明，通过AMS测量的宇宙射线质子变异性与ACIS背景很好地匹配，可用于估计负责背景的质子能量。我们讨论如何为未来的任务提供信息。
A science goal of many future X-ray observatories is mapping the cosmic web through deep exposures of faint diffuse sources. Such observations require low background and the best possible knowledge of the remaining unrejected background. The dominant contribution to the background above 1-2 keV is from Galactic Cosmic Ray protons. Their flux and spectrum are modulated by the solar cycle but also by solar activity on shorter timescales. Understanding this variability may prove crucial to reducing background uncertainty for ESA's Athena X-ray Observatory and other missions with large collecting area. We examine of the variability of the particle background as measured by ACIS on the Chandra X-ray Observatory and compare that variability to that measured by the Alpha Magnetic Spectrometer (AMS), a precision particle detector on the ISS. We show that cosmic ray proton variability measured by AMS is well matched to the ACIS background and can be used to estimate proton energies responsible for the background. We discuss how this can inform future missions.
