高能银河宇宙射线的传播
摘要
我们探讨了与银河来源高能宇宙射线（CRs）传播相关的若干方面，具体范围为 eV。特别是，我们详细研究了扩散/漂移场景，这是一种刚性依赖模型，能够解释CR光谱中肩部及第二肩部的起源，以及最新的成分和各向异性观测结果。此外，确定了在高度湍流磁场中传播的带电粒子扩散张量的数值行为。我们还调查了由CRs诱导的高能中子通量，表明CR肩部的刚性依赖模型可降低大气中子背景，从而鼓励寻找天体中子源。 After exploring this effect in the detection channel of lepton tracks, we investigate the less studied ``shower'' channel, which turns out to be particularly effective for isolating the prompt atmospheric neutrino component. Finally, we consider in detail the nuclear photodisintegration model as an alternative explanation for the knee in the CR spectrum, in which CR nuclei emitted by a source are disintegrated during their propagation through a surrounding optical/UV photon field. In this case, the composition is predicted to turn lighter across the knee, in constrast to the results obtained in rigidity-dependent scenarios.
引用
@article{arxiv.astro-ph/0411338,
title = {Propagation of High Energy Galactic Cosmic Rays},
author = {Julián Candia},
journal= {arXiv preprint arXiv:astro-ph/0411338},
year = {2007}
}
备注
PhD Thesis (in Spanish), 127 pages