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arXiv 0710.1382astro-ph
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超高能宇宙射线到达方向的全球各向异性:天基探测器的能力

Global anisotropy of arrival directions of ultra-high-energy cosmic rays: capabilities of space-based detectors

O. E. Kalashev, B. A. Khrenov, P. Klimov, S. Sharakin, S. V. Troitsky

摘要:

计划中的天基超高能宇宙射线探测器(TUS、JEM-EUSO和S-EUSO)最适合搜索宇宙射线粒子到达方向分布的全局各向异性,因为它们将能够用一台仪器观测整个天空。我们定量地计算了与两种最高能量粒子起源模型相关的各向异性的强度:河外模型(源遵循宇宙中星系的分布)和超重暗物质模型(源遵循星系晕中暗物质的分布)。基于实验的预期暴露,我们估计了有效搜索这些效应的最佳策略。

英文摘要:

Planned space-based ultra-high-energy cosmic-ray detectors (TUS, JEM-EUSO and S-EUSO) are best suited for searches of global anisotropies in the distribution of arrival directions of cosmic-ray particles because they will be able to observe the full sky with a single instrument. We calculate quantitatively the strength of anisotropies associated with two models of the origin of the highest-energy particles: the extragalactic model (sources follow the distribution of galaxies in the Universe) and the superheavy dark-matter model (sources follow the distribution of dark matter in the Galactic halo). Based on the expected exposure of the experiments, we estimate the optimal strategy for efficient search of these effects.

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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