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arXiv 1802.00636astro-ph.HEastro-ph.COhep-ph
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cosmic-ray物理学对暗物质间接搜索的影响

Impact of cosmic-ray physics on dark matter indirect searches

Daniele Gaggero, Mauro Valli

摘要:

对弥漫在宇宙中的难以捉摸的暗物质(DM)的探索(以及在天文尺度上对超越标准模型的物理学特征的探索)为高能天体物理学界提供了一个独特的机会和严峻的挑战。特别是,所谓的DM间接搜索-主要集中在一类理论上动机良好的DM候选者,如弱相互作用的大质量粒子-受到宇宙辐射的复杂天体物理背景的影响。对这一背景的理解和建模需要深入理解一个复杂的经典等离子体物理问题,即在特殊的天体物理环境中加速的高能带电粒子与银河系星际介质中的磁流体动力学湍流之间的相互作用。在这篇评论中,我们强调了几个方面,这令人兴奋的相互作用之间的最新索赔DM湮灭/衰变签名从天空和银河宇宙射线研究领域。我们的目的是进一步激发关于可行的天体物理学解释的辩论,讨论可能的方向,这将有助于打破简并模式在解释当前的数据。我们最终的目标是强调如何深入了解CR运输的物理,因此需要解决DM间接搜索程序在目前和未来几年。

英文摘要:

The quest for the elusive dark matter (DM) that permeates the Universe (and in general the search for signatures of Physics beyond the Standard Model at astronomical scales) provides a unique opportunity and a tough challenge to the high-energy astrophysics community. In particular, the so-called DM indirect searches - mostly focused on a class of theoretically well-motivated DM candidates such as the weakly-interacting massive particles - are affected by a complex astrophysical background of cosmic radiation. The understanding and modeling of such background requires a deep comprehension of an intricate classical plasma physics problem, i.e. the interaction between high-energy charged particles, accelerated in peculiar astrophysical environments, and magneto-hydrodynamic turbulence in the interstellar medium of our Galaxy. In this review we highlight several aspects of this exciting interplay between the most recent claims of DM annihilation/decay signatures from the sky and the Galactic cosmic-ray research field. Our purpose is to further stimulate the debate about viable astrophysical explanations, discussing possible directions that would help breaking degeneracy patterns in the interpretation of current data. We eventually aim to emphasize how a deep knowledge on the physics of CR transport is therefore required to tackle the DM indirect search program at present and in the forthcoming years.

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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