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首页> 外文期刊>Bulletin of the American Physical Society >APS -APS April Meeting 2017 - Event - Implications of tension between observations of the bright Galactic Center Excess and dim dwarf galaxies
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APS -APS April Meeting 2017 - Event - Implications of tension between observations of the bright Galactic Center Excess and dim dwarf galaxies

机译：APS -APS 2017年4月会议-活动-观测明亮的银河系中心过剩和昏暗矮星系之间的紧张关系

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We incorporate Milky Way dark matter halo profile uncertainties, aswell as an accounting of diffuse gamma-ray emission uncertainties indark matter annihilation models for the Galactic Center Extendedgamma-ray excess (GCE) detected by the Fermi Gamma Ray SpaceTelescope. The range of particle annihilation rate and masses expandwhen including these unknowns. However, two of the most preciseempirical determinations of the Milky Way halo's local density anddensity profile leave the signal region to be in considerable tensionwith dark matter annihilation searches from combined dwarf galaxyanalyses for single-channel dark matter annihilation models. Accordingly,we accurately quantify this tension in a joint likelihood analysis.We determine which particle dark matter models are favored in the case ofa high local dark matter density scenario and in the case where dark matterdifferentiates between the GC and dwarfs, specifying what part of theparameter space for such models is most favored.Intended for the focus session on the GeV excess
机译：我们结合了银河系暗物质晕轮廓的不确定性，以及费米伽马射线太空望远镜检测到的银河中心扩展伽马射线超额（GCE）的暗物质an灭模型中弥散伽马射线发射不确定性的考虑。当包括这些未知数时，粒子an灭率和质量的范围会扩大。然而，银河系晕圈的局部密度和密度分布图的两个最精确的经验确定使信号区域在暗物质an灭从组合矮星系分析的单通道暗物质an灭模型中搜索时处于相当紧张的状态。因此，我们在联合似然分析中准确地量化了这种张力。在高局部暗物质密度的情况下以及暗物质在GC和矮星之间分化的情况下，我们确定哪种粒子暗物质模型是有利的，并指定参数的哪个部分这种模型的空间是最受青睐的。

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