The Power Spectrum of Microwave Background Temperature Anisotropies Measured by the Tenerife Experiment
The Power Spectrum of Microwave Background Temperature Anisotropies Measured by the Tenerife Experiment
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特内里费岛实验测得的微波背景温度各向异性功率谱
DOI：
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发表时间：
1996
期刊：
影响因子：
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通讯作者：
J. P. Mücket
中科院分区：
文献类型：
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作者：
F. Atrio;S. Gottlöber;J. P. Mücket
我们根据特内里费岛对宇宙背景辐射温度各向异性的观测确定了物质密度扰动的功率谱斜率。我们计算了该实验测量的投影辐射各向异性功率谱，并研究了其与天空温度各向异性功率谱斜率的依赖性。我们证明，特内里费岛本身就意味着光谱指数的上限为 m ≤ 3。由于数据集较小，无法得出更有力的结论。所提出的方法可以应用于任何小规模实验。使用不同的窗函数对天空的同一区域进行采样可以探测不同尺度下辐射各向异性功率谱的斜率并确认多普勒峰值的存在。
We determine the slope of the power spectrum of the matter density perturbations from the Tenerife observations of the cosmic background radiation temperature anisotropies. We compute the projected radiation anisotropy power spectrum measured by this experiment and study its dependence with respect to the slope of the temperature anisotropy power spectrum on the sky. We show that Tenerife alone implies the upper bound on the spectral index of m ≤ 3. Stronger conclusions cannot be reached, because of the small data set. The method proposed can be applied to any small-scale experiment. Sampling the same region of the sky with different window functions could probe the slope of the radiation anisotropy power spectrum at different scales and confirm the presence of Doppler peaks.