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arXiv 1608.00786astro-ph.HEastro-ph.COastro-ph.GAhep-ph
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$γ$线中的暗物质:银河系中心与矮星系

Dark Matter in $γ$ lines: Galactic Center vs dwarf galaxies

Valentin Lefranc, Emmanuel Moulin, Paolo Panci, Filippo Sala, Joseph Silk

摘要:

我们提供CTA的灵敏度暗物质(DM)湮灭在$γ$射线线,从观察的银河系中心(GC),以及第一次,矮椭球星系(dSphs)。我们比较了GC达到dSphs作为一个功能的DM分布,这本身是鲜为人知的推定的核心半径。我们发现,目前最好的dSph候选人构成一个更有前途的目标比GC,核心半径为一到几个千秒差距。我们使用最新的仪器响应函数和CTA的背景估计,在此基础上,我们添加了漫射光子分量。我们的分析是特别感兴趣的TeV规模的电弱多重作为DM候选人,如超对称的威诺和最小的暗物质fiveplet,我们的预测与我们的预测灵敏度进行比较。

英文摘要:

We provide CTA sensitivities to Dark Matter (DM) annihilation in $γ$-ray lines, from the observation of the Galactic Center (GC) as well as, for the first time, of dwarf Spheroidal galaxies (dSphs). We compare the GC reach with that of dSphs as a function of a putative core radius of the DM distribution, which is itself poorly known. We find that the currently best dSph candidates constitute a more promising target than the GC, for core radii of one to a few kpc. We use the most recent instrument response functions and background estimations by CTA, on top of which we add the diffuse photon component. Our analysis is of particular interest for TeV-scale electroweak multiplets as DM candidates, such as the supersymmetric Wino and the Minimal Dark Matter fiveplet, whose predictions we compare with our projected sensitivities.

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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