标题： 用切连科夫望远镜测量宇宙射线中铁谱的模板方法 显示英文标题

标题： A template method for measuring the iron spectrum in cosmic rays with Cherenkov telescopes

摘要： 宇宙射线中元素的能量依赖性丰度在理解其加速和传播过程中起着重要作用。 目前的大多数结果都是通过气球或卫星携带的探测器进行直接测量，或者通过地球表面的空气簇射探测器阵列进行间接测量获得的。 成像大气切连科夫望远镜（IACTs）主要用于$\gamma$-射线天文学，也可以用于宇宙射线物理研究。 它们能够测量由重核和空气簇射中产生的次级粒子发出的切连科夫光，并因此对能量为数十到数百 TeV 的宇宙射线粒子的电荷和能量敏感。 将介绍一种基于模板的方法，该方法可以从 IACTs 拍摄的图像中同时重建原始粒子的电荷和能量。 利用这种方法可以将重核（如铁）与较轻的宇宙射线区分开，从而在数十到数百 TeV 的范围内测量这些重核的丰度和能谱。 显示英文摘要

摘要： The energy-dependent abundance of elements in cosmic rays plays an important role in understanding their acceleration and propagation. Most current results are obtained either from direct measurements by balloon- or satellite-borne detectors, or from indirect measurements by air shower detector arrays on the Earth's surface. Imaging Atmospheric Cherenkov Telescopes (IACTs), used primarily for $\gamma$-ray astronomy, can also be used for cosmic-ray physics. They are able to measure Cherenkov light emitted both by heavy nuclei and by secondary particles produced in air showers, and are thus sensitive to the charge and energy of cosmic ray particles with energies of tens to hundreds of TeV. A template-based method, which can be used to reconstruct the charge and energy of primary particles simultaneously from images taken by IACTs, will be introduced. Heavy nuclei, such as iron, can be separated from lighter cosmic rays with this method, and thus the abundance and spectrum of these nuclei can be measured in the range of tens to hundreds of TeV.