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arXiv 2402.11286astro-ph.HEastro-ph.IM
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成像大气切伦科夫望远镜阵列与广延大气簇射阵列联合重建的前景

Prospects for joint reconstruction of imaging air Cherenkov Telescope array and extensive air shower array

Zhipeng Zhang, Ruizhi Yang, Shoushan Zhang, Liqiao Yin, Jiali Liu, Yudong Wang, Lingling Ma, Zhen Cao

AI总结:

本文提出结合LHAASO的缪子探测器与八台IACT进行联合重建,利用缪子探测器的高背景抑制能力,在10 TeV以上将灵敏度提升25%-60%,尤其利于延展源观测。

摘要:

在本文中,我们提出了利用广延大气簇射阵列(EAS)和成像大气切伦科夫望远镜阵列(IACT)对γ射线事件进行联合重建的方法。我们考虑了在LHAASO(大型高海拔空气簇射观测站)场址上建造八台切伦科夫望远镜,并研究了结合IACT与LHAASO-KM2A的缪子探测器信息时微分灵敏度的提升。我们发现,由于LHAASO缪子探测器提供了更高的宇宙射线背景抑制能力和更高的伽马射线保留率,这种联合重建可以显著提高IACT的灵敏度,特别是对于延展源和长曝光时间。在本文中,我们展示了一个八望远镜小型阵列的性能,结果表明在10 TeV以上,缪子探测器可以在不同能量范围内将灵敏度提升25%至60%。

英文摘要:

In this paper we proposed a joint reconstruction of \gray events using both extensive air array (EAS) and Imaging air Cherenkov Telescope array (IACT). We considered eight Cherenkov telescopes to be built on the LHAASO (Large High Altitude Air Shower Observatory) site and investigate the improvement in differential sensitivity when combining the information from both IACT and Moun detectors of LHAASO-KM2A. We found that due to the higher cosmic ray background rejection power and higher gamma ray retention ratio provided by muon detectors of LHAASO, such a joint reconstruction can significantly improve the sensitivity of IACTs, especially for extended sources and long exposure time. In this article, we have shown the performance of an eight-telescopes mini array, and our results indicate that above $10~\rm TeV$, the sensitivity can be improved by muon detector from $25\% - 60\%$ in different energy ranges.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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