Two-Point Correlations in the COBE DMR Four-Year Anisotropy Maps
Two-Point Correlations in the COBE DMR Four-Year Anisotropy Maps
复制标题
COBE DMR 四年各向异性图中的两点相关性
DOI：
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发表时间：
1996
期刊：
影响因子：
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通讯作者：
G. Wright
中科院分区：
文献类型：
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作者：
G. Hinshaw;A. Banday;C. Bennett;K. Gorski;A. Kogut;C. Lineweaver;G. Wright
根据4年COBE DMR微波各向异性图计算了两点温度相关函数。我们研究的两点函数，这是勒让德变换的角功率谱，并表明，数据是统计一致的通道和频率的频率。最有可能的四极归一化的CMB各向异性的尺度不变的幂律谱计算，使用各种数据组合。对于给定的数据集，从两点数据推断的归一化与通过其他方法推断的归一化一致。从任何数据组合中推导出的最小和最大归一化分别为16.4和19.6 μK，通常首选值为18 μK。
The two-point temperature correlation function is evaluated from the 4 yr COBE DMR microwave anisotropy maps. We examine the two-point function, which is the Legendre transform of the angular power spectrum, and show that the data are statistically consistent from channel to channel and frequency to frequency. The most likely quadrupole normalization is computed for a scale-invariant power-law spectrum of CMB anisotropy, using a variety of data combinations. For a given data set, the normalization inferred from the two-point data is consistent with that inferred by other methods. The smallest and largest normalizations deduced from any data combination are 16.4 and 19.6 μK, respectively, with a value ~18 μK generally preferred.