用DMFIT拟合暗物质的Gamma-Ray谱：GLAST和银河系中心区
Fitting the Gamma-Ray Spectrum from Dark Matter with DMFIT: GLAST and the Galactic Center Region
摘要：
我们研究GLAST揭示粒子暗物质属性与银河系中心区域的伽马射线观测的潜力。我们提出了完整的GLAST模拟，包括所有已知的伽马射线源，在银河系中心周围的4度区域，除了弥漫的伽马射线背景和暗物质信号。我们介绍DMFIT，一个工具，允许一个适合的伽马射线发射对湮灭的通用粒子暗物质模型和提取信息的质量，归一化和湮灭分支比到标准模型的最终状态。我们评估的影响和系统的影响背景建模和理论先验的重建暗物质粒子属性。我们详细的模拟表明，对于一些动机良好的超对称暗物质设置与一年的GLAST数据，它将不仅可以显着地检测到背景上的暗物质信号，而且还可以估计暗物质质量和其占主导地位的对湮灭模式。
英文摘要：
We study the potential of GLAST to unveil particle dark matter properties with gamma-ray observations of the Galactic center region. We present full GLAST simulations including all gamma-ray sources known to date in a region of 4 degrees around the Galactic center, in addition to the diffuse gamma-ray background and to the dark matter signal. We introduce DMFIT, a tool that allows one to fit gamma-ray emission from pair-annihilation of generic particle dark matter models and to extract information on the mass, normalization and annihilation branching ratios into Standard Model final states. We assess the impact and systematic effects of background modeling and theoretical priors on the reconstruction of dark matter particle properties. Our detailed simulations demonstrate that for some well motivated supersymmetric dark matter setups with one year of GLAST data it will be possible not only to significantly detect a dark matter signal over background, but also to estimate the dark matter mass and its dominant pair-annihilation mode.
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