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arXiv 1804.05613astro-ph.IM
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利用皮埃尔俄歇天文台寻找超高能光子

Search for Ultra-High Energy Photons with the Pierre Auger Observatory

Piotr Homola

摘要:

皮埃尔俄歇天文台的主要科学目标之一是寻找超高能光子。这种光子可能起源于高能宇宙射线核与宇宙微波背景的相互作用(所谓的宇宙成因光子),也可能起源于奇异的场景,例如假设某些假设的超大质量粒子的产生和衰变。后一类模型意味着地球上相对较大的超高能光子通量,而前者涉及宇宙射线核与微波背景的相互作用-恰恰相反:非常小的分数。对皮埃尔·俄歇天文台迄今收集的数据的研究导致对超高能光子通量进行了非常严格的限制:低于大多数奇异模型的预测,接近宇宙起源光子的预测通量。本文总结了这些研究的现状和进一步研究的前景。

英文摘要:

One of key scientific objectives of the Pierre Auger Observatory is the search for ultra-high energy photons. Such photons could originate either in the interactions of energetic cosmic-ray nuclei with the cosmic microwave background (so-called cosmogenic photons) or in the exotic scenarios, e.g. those assuming a production and decay of some hypothetical super-massive particles. The latter category of models would imply relatively large fluxes of photons with ultra-high energies at Earth, while the former, involving interactions of cosmic-ray nuclei with the microwave background - just the contrary: very small fractions. The investigations on the data collected so far in the Pierre Auger Observatory led to placing very stringent limits to ultra-high energy photon fluxes: below the predictions of the most of the exotic models and nearing the predicted fluxes of the cosmogenic photons. In this paper the status of these investigations and perspectives for further studies are summarized.

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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