Observed galaxy number counts on the light cone up to second order: III. Magnification bias
Observed galaxy number counts on the light cone up to second order: III. Magnification bias
复制标题
观测到的光锥上的星系数量达到二阶：III。
DOI：
10.1088/0264-9381/32/19/195011
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发表时间：
2014
影响因子：
3.5
通讯作者：
D. Bertacca
中科院分区：
文献类型：
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作者：
D. Bertacca
我们在宇宙学尺度上研究了一致性模型下红移空间中星系数超密度随放大率的变化。结果包含了所有的广义相对论效应，直到二阶所产生的观测过去的光锥，包括所有的红移和透镜畸变，速度，萨克斯-沃尔夫，综合SW和时间延迟项的贡献。我们发现了几个新的条款和贡献，可能是潜在的重要的准确计算的偏差估计的非高斯性和精度参数估计。
We study up to second order the galaxy number over-density that depends on magnification in redshift space on cosmological scales for a concordance model. The result contains all general relativistic effects up to second order which arise from observations of the past light cone, including all redshift and lensing distortions, contributions from velocities, Sachs–Wolfe, integrated SW, and time-delay terms. We find several new terms and contributions that could be potentially important for an accurate calculation of the bias on estimates of non-Gaussianity and on precision parameter estimates.