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arXiv 1609.09104hep-phastro-ph.COastro-ph.GAastro-ph.HE
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盒子、助推器和能量二元性:通过动态暗物质理解银河系中心Gamma-Ray过剩

Boxes, Boosts, and Energy Duality: Understanding the Galactic-Center Gamma-Ray Excess through Dynamical Dark Matter

Kimberly K. Boddy, Keith R. Dienes, Doojin Kim, Jason Kumar, Jong-Chul Park, Brooks Thomas

摘要:

目前存在的许多模型试图解释从银河系中心发出的过量伽马射线的湮灭或衰变的暗物质。这些模型通常表现出各种复杂的级联机制的光子生产,导致一个不平凡的运动学,掩盖了底层的黑暗部门的物理。在本文中,相比之下,我们观察到的伽玛射线过剩的频谱可能实际上表现出一个有趣的“能量对偶”不变性下$E_γ\rightarrow E_\ast^2/E_γ$的一些$E_\ast$。正如我们将要讨论的那样,这样的能量二元性指向一个非常简单的替代运动学,而这个替代运动学又在动力学暗物质框架内自然地实现。因此,对这种能量二元性的观测可以提供有关银河系中心伽马射线过剩可能产生的暗区性质的大量信息,并突出了在1 GeV左右的能量范围内获得更完整的银河系中心过剩数据的重要性。

英文摘要:

Many models currently exist which attempt to interpret the excess of gamma rays emanating from the Galactic Center in terms of annihilating or decaying dark matter. These models typically exhibit a variety of complicated cascade mechanisms for photon production, leading to a non-trivial kinematics which obscures the physics of the underlying dark sector. In this paper, by contrast, we observe that the spectrum of the gamma-ray excess may actually exhibit an intriguing "energy-duality" invariance under $E_γ\rightarrow E_\ast^2/E_γ$ for some $E_\ast$. As we shall discuss, such an energy duality points back to a remarkably simple alternative kinematics which in turn is realized naturally within the Dynamical Dark Matter framework. Observation of this energy duality could therefore provide considerable information about the properties of the dark sector from which the Galactic-Center gamma-ray excess might arise, and highlights the importance of acquiring more complete data for the Galactic-Center excess in the energy range around 1 GeV.

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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