论文标题
对超高能宇宙射线加速器的观察限制
Observational constraints on accelerators of ultra-high energy cosmic rays
论文作者
论文摘要
我们探讨了两个通用假设，用于追踪宇宙中超高能宇宙射线（UHECR）的来源：恒星形成速率密度或恒星质量密度。对于每种情况，我们都会推断出加速器中发射机制，能量学和逃避环境中元素的丰富性的一组约束。从这些约束中，我们产生了超过40 〜EEV的天空图，该目录包括410,761个星系至350 MPC，并提供了一个近红外的玻璃量限制的样品，以在全天空上绘制出恒星的质量和星星的地层。考虑到每个星系中托管的间歇来源的场景，我们表明在UHECR的到达方向上观察到的主要特征反过来又可以限制来源的爆发速率，前提是磁性磁性效应在星系群中发挥作用。
We explore two generic hypotheses for tracing the sources of ultra-high energy cosmic rays (UHECRs) in the Universe: star formation rate density or stellar mass density. For each scenario, we infer a set of constraints for the emission mechanisms in the accelerators, for their energetics and for the abundances of elements at escape from their environments. From these constraints, we generate sky maps above 40~EeV expected from a catalog that comprises 410,761 galaxies out to 350 Mpc and provides a near-infrared flux-limited sample to map both stellar mass and star formation rate over the full sky. Considering a scenario of intermittent sources hosted in every galaxy, we show that the main features observed in arrival directions of UHECRs can in turn constrain the burst rate of the sources provided that magnetic-horizon effects are at play in clusters of galaxies.
