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arXiv 1902.09663astro-ph.HEhep-ph
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星暴星系是高能中微子和宇宙射线的共同来源吗?

Are starburst galaxies a common source of high energy neutrinos and cosmic rays?

Cecilia Lunardini, Gregory S. Vance, Kimberly L. Emig, Rogier A. Windhorst

摘要:

最近对皮埃尔·俄歇天文台观测到的宇宙线空气簇射的分析表明,附近的星暴星系(SBG)可能是能量E > 39 EeV的超高能宇宙线通量的约10%的原因。由于高能中微子是宇宙射线相互作用的直接产物,我们研究了SBG作为在冰立方观测到的~ 10^-2 - 1 PeV中微子的可能来源。进行统计分析,以建立观测到的中微子和一组45附近的无线电和红外明亮的SBG之间的位置相关性的程度。我们的结果是一致的,没有因果关系。然而,不排除探测器中约10%的高能起始事件(HESE)来自候选SBG的情况。对于不同的数据子集,以及由皮埃尔俄歇天文台分析激发的两个不同的SBG子集,得出了相同的结论。

英文摘要:

A recent analysis of cosmic ray air showers observed at the Pierre Auger Observatory indicates that nearby starburst galaxies (SBGs) might be the cause of ~10% of the Ultra-High-Energy Cosmic Ray flux at energies E > 39 EeV. Since high energy neutrinos are a direct product of cosmic ray interactions, we investigate SBGs as a possible source of some of the ~ 10^-2 - 1 PeV neutrinos observed at IceCube. A statistical analysis is performed to establish the degree of positional correlation between the observed neutrinos and a set of 45 nearby radio- and infrared-bright SBGs. Our results are consistent with no causal correlation. However, a scenario where ~10% of the High Energy Starting Events (HESE) in the detector are coming from the candidate SBGs is not excluded. The same conclusion is reached for different data subsets, as well as two different subsets of SBGs motivated by the Pierre Auger Observatory analysis.

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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