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arXiv 1111.0320astro-ph.HE
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从Milky Way卫星和Fermi-LAT的联合分析中约束暗物质信号

Constraining Dark Matter Signal from a Combined Analysis of Milky Way Satellites with the Fermi-LAT

M. Llena Garde, J. Conrad, J. Cohen-Tanugi, M. Kaplinghat, G. Martinez

摘要:

矮球状星系具有大的质光比和低的天体物理背景,因此被认为是伽马射线波段最有希望的暗物质搜索目标之一。通过应用联合似然分析,在没有检测到的情况下得到的限制的功率可以被增强,并且可以获得对暗物质参数空间的鲁棒约束。我们提出的结果,从10个矮球状星系使用费米-LAT数据的综合分析。分析了不同的湮灭通道,并考虑了天体物理性质的不确定性。

英文摘要:

Dwarf spheroidal galaxies have a large mass to light ratio and low astrophysical background, and are therefore considered one of the most promising targets for dark matter searches in the gamma-ray band. By applying a joint likelihood analysis, the power of resultant limits in case of no detection can be enhanced and robust constraints on the dark matter parameter space can be obtained. We present results from a combined analysis of 10 dwarf spheroidal galaxies using Fermi-LAT data. Different annihilation channels have been analyzed and uncertainties from astrophysical properties have been taken into account.

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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