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arXiv 2112.02415astro-ph.HE
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射电星系超高能宇宙射线到达方向的磁致各向异性

Magnetically Induced Anisotropies in the Arrival Directions of Ultra-high-energy Cosmic Rays from Nearby Radio Galaxies

Cainã de Oliveira, Vitor de Souza

摘要:

在强结构河外磁场(EGMF)模型的假设下,对超高能宇宙射线的到达方向进行了详细的模拟。离开半人马座A、室女座A和天炉座A的粒子传播到地球,模拟的各向异性信号与皮埃尔·俄歇和望远镜阵列合作组织发表的偶极子和热点进行比较。的EGMF结构上产生的事件在本地源的到达方向的优势。室女座A方向事件的缺失与EGMF引起的强烈偏离有关。证据表明,这三个来源有助于在三个检测到的热点方向的事件过多。在这里考虑的EGMF下,M82被证明对望远镜阵列天文台测量的热点没有贡献。

英文摘要:

Detailed simulations of the arrival directions of ultra-high energy cosmic rays are performed under the assumption of strong and structured extragalactic magnetic field (EGMF) models. Particles leaving Centaurus A, Virgo A, and Fornax A are propagated to Earth, and the simulated anisotropic signal is compared to the dipole and hotspots published by the Pierre Auger and Telescope Array Collaborations. The dominance of the EGMF structure on the arrival directions of events generated in local sources is shown. The absence of events from the Virgo A direction is related to the strong deviation caused by the EGMF. Evidence that these three sources contribute to an excess of events in the direction of the three detected hotspots is presented. Under the EGMF considered here, M82 is shown to have no contribution to the hotspot measured by the Telescope Array Observatory.

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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