The Energy Scale of the Pierre Auger Observatory
The Energy Scale of the Pierre Auger Observatory
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皮埃尔俄歇天文台的能量等级
DOI：
10.22323/1.358.0231
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
B. Dawson
中科院分区：
文献类型：
--
作者：
B. Dawson
能量测量是天体粒子观测站最重要和最具挑战性的任务之一，特别是考虑到能量必须伴随着可靠的统计和系统不确定性。Pierre Auger天文台的能量标度是基于其荧光探测器的观测，利用这项技术提供的近量热测量。这种荧光能量定标通过混合天文台对空气簇射的一致荧光和地面探测器观测而转移到地面探测器测量。在这篇文章中，我们介绍了我们能源规模的现状。我们通过讨论我们的方法及其系统和统计上的不确定性，展示了我们对宇宙线能量分配的信心。我们描述了最近在不可见能量估计方面的改进的影响，并讨论了与荧光产量、大气、探测器校准和事件重建过程相关的不确定性。
The measurement of energy is one of the most important and challenging tasks of an astroparticle observatory, especially given that the energy must be accompanied by reliable statistical and systematic uncertainties. The energy scale of the Pierre Auger Observatory is based on observations made by its fluorescence detector, taking advantage of the near-calorimetric measurements afforded by this technique. This fluorescence energy calibration is transferred to the surface detector measurements via coincident fluorescence and surface detector observations of air showers at the hybrid observatory. In this contribution, we present the current status of our energy scale. We demonstrate our confidence in the cosmic ray energy assignments by discussing our methods and their systematic and statistical uncertainties. We describe the impact of recent improvements in the estimation of invisible energy, and discuss uncertainties associated with the fluorescence yield, the atmosphere, detector calibration, and the event reconstruction process.