Universal Weak Lensing Distortion of Cosmological Correlation Functions

Details Universal Weak Lensing Distortion of Cosmological Correlation Functions Universal Weak Lensing Distortion of Cosmological Correlation Functions

2008-06-02

arxiv.org/abs/0806.0331v2

Phys.Rev.D78:043508,2008

Astronomy and Astrophysics

Astrophysics

12 pages, 9 figures; accepted for publication in Phys. Rev. D; v2: references added

Scientific paper

10.1103/PhysRevD.78.043508

Gravitational lensing affects observed cosmological correlation functions because observed images do not coincide with true source locations. We treat this universal effect in a general way here, deriving a single formula that can be used to determine to what extent this effect distorts any correlation function. We then apply the general formula to the correlation functions of galaxies, of the 21-cm radiation field, and of the CMB.

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