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arXiv 1508.04530astro-ph.HEastro-ph.GA
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银河系磁场与UHECR光学

The Galactic Magnetic Field and UHECR Optics

Glennys R. Farrar, Nafiun Awal, Deepak Khurana, Michael Sutherland

摘要:

一个好的银河系磁场模型是至关重要的估计银河系的贡献,在暗物质和CMB宇宙学研究,确定源的UHECR,也模拟银河系CR的运输,因为晕场提供了一个重要的逃生路线沿其场线扩散。我们简要回顾了Jansson-Farrar 2012模型对GMF大尺度结构的观测基础,强调了N-S方向螺旋晕场的有力证据。介绍了GMF对UHECRs的透镜效应的新结果,显示了多个图像和随源方向和CR刚度而变化的戏剧性放大和缩小。

英文摘要:

A good model of the Galactic magnetic field is crucial for estimating the Galactic contribution in dark matter and CMB-cosmology studies, determining the sources of UHECRs, and also modeling the transport of Galactic CRs since the halo field provides an important escape route for by diffusion along its field lines. We briefly review the observational foundations of the Jansson-Farrar 2012 model for the large scale structure of the GMF, underscoring the robust evidence for a N-to-S directed, spiraling halo field. New results on the lensing effect of the GMF on UHECRs are presented, displaying multiple images and dramatic magnification and demagnification that varies with source direction and CR rigidity.

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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