Cosmic-ray mass composition with the TA SD 12-year data

Cosmic-ray mass composition with the TA SD 12-year data
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宇宙射线质量成分与 TA SD 12 年数据

DOI:
10.22323/1.395.0300
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发表时间:
2021
期刊:
Proceedings of 37th International Cosmic Ray Conference — PoS(ICRC2021)
影响因子:
--
通讯作者:
Y. Zhezher
Y. Zhezher
中科院分区:
--
文献类型:
--
作者:
Y. Zhezher

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望远镜阵列(TA)是北方半球最大的超高能宇宙线(UHECR)天文台。它致力于以混合模式探测广泛的空气簇射(EAS),既通过用荧光望远镜测量簇射的纵向轮廓,又通过表面探测器(SD)阵列测量它们在地面上的颗粒足迹。虽然荧光望远镜可以测量EAS最敏感的成分特征,簇射最大值的深度(Xmax),但它们也有占空比小的缺点。这项工作的目的是研究的UHECR组成的基础上,完全表面探测器数据。对于这项任务,从SD数据中获得的一组组成敏感的可观测量值用于机器学习方法-提升决策树。我们将介绍的结果UHECR质量组成的基础上12年的数据从TA SD使用这种技术,我们将讨论可能的系统学强加的强子相互作用模型。
Telescope Array (TA) is the largest ultra-high-energy cosmic-ray (UHECR) observatory in the Northern Hemisphere. It is dedicated to detect extensive air showers (EAS) in hybrid mode, both by measuring the shower’s longitudinal profile with fluorescence telescopes and their particle footprint on the ground from the surface detector (SD) array. While fluorescence telescopes can measure the most composition-sensitive characteristic of EAS, the depth of the shower maximum (Xmax), they also have the drawback of small duty cycle. This work aims to study the UHECR composition based solely on the surface detector data. For this task, a set of composition-sensitive observables obtained from the SD data is used in a machine-learning method – the Boosted Decision Trees. We will present the results of the UHECRmass composition based on the 12-year data from the TA SD using this technique, and we will discuss of the possible systematics imposed by the hadronic interaction models.
望远镜阵列黑岩和长脊 FADC 荧光探测器与表面阵列混合模式测量的超高能宇宙线诱发空气簇射最大值深度
DOI: 10.3847/1538-4357/aabad7
发表时间: 2018
期刊: The Astrophysical Journal
影响因子: --
作者:
Abbasi, R. U.;Abe, M.;Abu-Zayyad, T.;Allen, M.;Azuma, R.;Barcikowski, E.;Belz, J. W.;Bergman, D. R.;Blake, S. A.;Cady, R.
通讯作者: Cady, R.