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arXiv 2110.09487astro-ph.HEastro-ph.IM
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AugerPrime --皮埃尔俄歇天文台的升级

AugerPrime -- The upgrade of the Pierre Auger Observatory

Jaroslaw Stasielak

摘要:

超高能宇宙射线(UHECR)是用巨大的地面探测器系统研究的,它们记录了大气中宇宙射线粒子引起的大范围空气簇射。皮埃尔俄歇天文台的研究-有史以来建造的最大的此类探测器-在很大程度上促成了一些突破,并极大地促进了我们对UHECR的理解。尽管如此,到目前为止的结果仍然是不确定的,因为既没有确定这些宇宙中已知的最高能粒子的来源,也没有完全理解40 EeV以上的宇宙射线通量抑制的明确起源。与此同时,对地面上广泛的空气簇射的μ子分量的精确测量显示出与强子相互作用模型的预测不一致。这些相互关联的谜题的解释是现代天体物理学的重要目标之一。皮埃尔俄歇天文台获得的结果表明,进一步了解UHECRs需要改进现有探测器的测量能力,其中的关键特征是空气簇射的μ子和电磁分量的优越分离。AugerPrime是皮埃尔·俄歇天文台正在进行的升级,旨在完成这一任务。AugerPrime的主要目的是提高我们分析宇宙射线质量的灵敏度,这将有助于阐明UHECR的起源。在本文中,我们概述了AugerPrime设计的主要特点,它的现状,并讨论了升级后的天文台的目标和潜在的能力。

英文摘要:

Ultra-high-energy cosmic rays (UHECRs) are studied with giant ground-based detector systems recording extensive air showers, induced by cosmic ray particles in the atmosphere. Research at the Pierre Auger Observatory - the largest of such detectors ever built -- largely contributed to a number of breakthroughs and dramatically advanced our understanding of UHECRs. Nonetheless, the results so far are still inconclusive as neither have the sources of these most energetic particles known in the Universe been determined, nor has the origin of the unambiguously established cosmic ray flux suppression above 40 EeV been fully understood. At the same time, precise measurements of the muon component of the extensive air showers on the ground show discrepancies with the predictions of hadronic interaction models. The explanation of these puzzles, which are closely related to each other, is one of the most important goals of modern astrophysics. The results obtained by the Pierre Auger Observatory indicate that further advances in understanding UHECRs require an improvement of the measuring capabilities of existing detectors, where the key feature is a superior separation of the muonic and electromagnetic components of air showers. AugerPrime, the ongoing upgrade of the Pierre Auger Observatory has been designed for this task. The main objective of the AugerPrime is to enhance the sensitivity of our analyses to the masses of cosmic rays, which will help to elucidate the origin of the UHECRs. In this paper we overview the main features of the AugerPrime design, its current status, and discuss the goals and potential capabilities of the upgraded Observatory.

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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