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arXiv 1012.0755astro-ph.HEhep-ph
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大尺度扩散gamma-ray辐射各向异性的测量

Measurement of anisotropies in the large-scale diffuse gamma-ray emission

G. A. Gomez-Vargas

摘要:

我们已经进行了角功率谱的第一次测量在大规模的扩散发射的能量从1 - 50 GeV。我们比较了数据和模拟模型的结果,以确定各向异性性能的显着差异。我们发现角功率高于光子噪声水平的数据在多极大于~100的能量1 <E <10 GeV。数据中的超额功效表明模型中不存在点源群体的贡献。

英文摘要:

We have performed the first measurement of the angular power spectrum in the large-scale diffuse emission at energies from 1-50 GeV. We compared results from data and a simulated model in order to identify significant differences in anisotropy properties. We found angular power above the photon noise level in the data at multipoles greater than ~ 100 for energies 1< E <10 GeV. The excess power in the data suggests a contribution from a point source population not present in the model.

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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