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arXiv 1107.3722astro-ph.HEhep-ph
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宇宙成因中微子和光子对超高能宇宙射线起源的制约

Constraints on the origin of ultra-high-energy cosmic rays from cosmogenic neutrinos and photons

Guillaume Decerprit, Denis Allard

摘要:

我们研究了超高能宇宙射线(UHECR)在河外传播过程中宇宙成因中微子和光子的产生。对于广泛的模型在宇宙学演化的源光度,成分和最大能量,我们计算宇宙成因秒的预期流量归一化我们的宇宙射线输出实验光谱和比较GeV-TeV的伽玛射线的扩散通量的费米卫星测量的实验之一。这些模型中的大多数都为目前的实验(如IceCube或Pierre Auger)提供了显着的中微子通量。此外,我们讨论的可能性签署UHE质子源的存在,无论是在宇宙射线视界内或外使用中微子或光子观测,即使宇宙射线的组成变得更重的最高能量。我们讨论了可能的限制,可能带来的UHECR起源从不同的信使和能量范围。

英文摘要:

We study the production of cosmogenic neutrinos and photons during the extragalactic propagation of ultra-high-energy cosmic rays (UHECRs). For a wide range of models in cosmological evolution of source luminosity, composition and maximum energy we calculate the expected flux of cosmogenic secondaries by normalizing our cosmic ray output to experimental spectra and comparing the diffuse flux of GeV-TeV gamma-rays to the experimental one measured by the Fermi satellite. Most of these models yield significant neutrino fluxes for current experiments like IceCube or Pierre Auger. Furthermore, we discuss the possibilities of signing the presence of UHE proton sources either within or outside the cosmic ray horizon using neutrinos or photons observations even if the cosmic ray composition becomes heavier at the highest energies. We discuss the possible constraints that could be brought on the UHECR origin from the different messengers and energy ranges.

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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