Sensitivity of the Cherenkov Telescope Array for probing cosmology and fundamental physics with gamma-ray propagation
Sensitivity of the Cherenkov Telescope Array for probing cosmology and fundamental physics with gamma-ray propagation
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切伦科夫望远镜阵列通过伽马射线传播探测宇宙学和基础物理的灵敏度
DOI：
10.1088/1475-7516/2021/02/048
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发表时间：
2021
影响因子：
6.4
通讯作者：
Alispach, C.
中科院分区：
文献类型：
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作者：
Abdalla, H.;Abe, H.;Acero, F.;Acharyya, A.;Adam, R.;Agudo, I.;Aguirre-Santaella, A.;Alfaro, R.;Alfaro, J.;Alispach, C.
切伦科夫望远镜阵列(CTA)是新一代地面射线天文学天文台，它提供了独特的能力来解决天体物理学、宇宙学和基础物理学中的重大悬而未决的问题。我们通过对活动星系核(AGN)及其相对论喷流的模拟观测，研究了作为CTA关键科学项目的一部分可以探索的一些显著的射线宇宙学领域。用CTA观测活动星系核将能够测量河外背景光上的射线吸收，统计不确定度低于15%，最高可达红移，并可限制或探测最高可达0.3pG的星系间磁场强度的射线晕。用CTA进行的银河系外观测也显示了在标准模型之外探测物理的前景。来自射线天文学的洛伦兹不变性破坏的最佳极限将至少提高两到三倍。CTA还将探测参数空间，在该参数空间中，类轴子粒子可能构成暗物质的重要组成部分，如果不是全部的话。我们总结了CTA和其他即将到来的设施之间的协同作用，这些设施将促进射线宇宙学的发展。
The Cherenkov Telescope Array (CTA), the new-generation ground-based observatory for-ray astronomy, provides unique capabilities to address significant open questions in astrophysics, cosmology, and fundamental physics. We study some of the salient areas of-ray cosmology that can be explored as part of the Key Science Projects of CTA, through simulated observations of active galactic nuclei (AGN) and of their relativistic jets. Observations of AGN with CTA will enable a measurement of-ray absorption on the extragalactic background light with a statistical uncertainty below 15% up to a redshiftand to constrain or detect-ray halos up to intergalactic-magnetic-field strengths of at least 0.3pG. Extragalactic observations with CTA also show promising potential to probe physics beyond the Standard Model. The best limits on Lorentz invariance violation from-ray astronomy will be improved by a factor of at least two to three. CTA will also probe the parameter space in which axion-like particles could constitute a significant fraction, if not all, of dark matter. We conclude on the synergies between CTA and other upcoming facilities that will foster the growth of-ray cosmology.