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arXiv 0706.2597astro-ph
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UHE质子在磁化大尺度结构中的传播

Propagation of UHE protons through a magnetized large scale structure

Hyesung Kang, Santabrata Das, Dongsu Ryu, Jungyeon Cho

摘要:

在宇宙大尺度结构形成过程中产生的星系际磁场影响着超高能电子回旋共振的传播。我们采用了一种新的模型,其中大尺度河外磁场(EGMF)估计的气体流动的流体动力学模拟的一致性LambdaCDM宇宙的局部动力学性质。利用模型磁场,计算了E > 10^{19} eV的质子从宇宙源注入后穿过宇宙大尺度结构,由于与宇宙背景辐射相互作用而损失能量的偏转角、时间延迟和能谱。这项研究的起源UHECRs的影响进行了讨论。

英文摘要:

The propagation of UHECRs is affected by the intergalactic magnetic fields that were produced during the course of the large scale structure formation of the universe. We adopt a novel model where the large scale extragalactic magnetic fields (EGMF) are estimated from local dynamic properties of the gas flows in hydrodynamic simulations of a concordance LambdaCDM universe. With the model magnetic fields, we calculate the deflection angle, time delay and energy spectrum of protons with E > 10^{19} eV that are injected at cosmological sources and then travel through the large scale structure of the universe, losing the energy due to interactions with the cosmic background radiation. Implications of this study on the origin of UHECRs are discussed.

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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