arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1901.01899astro-ph.HE
收藏

用宇宙成因中微子确定超高能cosmic-ray质子的分数

Determining the fraction of cosmic-ray protons at ultra-high energies with cosmogenic neutrinos

Arjen van Vliet, Rafael Alves Batista, Jörg R. Hörandel

摘要:

宇宙成因中微子是超高能宇宙射线(UHECR)与宇宙光子场相互作用产生的。对这些中微子扩散通量的限制可以用来限制到达地球的能量为$E_{p} \gtrsim 30$ EeV的质子的比例,从而在不完全依赖强子相互作用模型的情况下对UHECR的组成进行限制。我们表明,在何种程度上目前的中微子望远镜已经约束这部分质子和讨论的前景,下一代探测器,以进一步约束it.Additionally,我们讨论了这些限制的影响,为几个流行的候选人UHECR源类。

英文摘要:

Cosmogenic neutrinos are produced when ultra-high-energy cosmic rays (UHECRs) interact with cosmological photon fields. Limits on the diffuse flux of these neutrinos can be used to constrain the fraction of protons arriving at Earth with energies $E_{p} \gtrsim 30$ EeV, thereby providing constraints on the composition of UHECRs without fully relying on hadronic interaction models. We show to which extent current neutrino telescopes already constrain this fraction of protons and discuss the prospects for next-generation detectors to further constrain it. Additionally, we discuss the implications of these limits for several popular candidates for UHECR source classes.

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。

↑