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arXiv · 1506.08806

Weak lensing in non-statistically isotropic universes

Moumita Aich·Aditya Rotti·Tarun Souradeep
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Abstract

The Bipolar Spherical Harmonics (BipoSH) form a natural basis to study the CMB two point correlation function in a non-statistically isotropic (non-SI) universe. The coefficients of expansion in this basis are a generalisation of the well known CMB angular power spectrum and contain complete information of the statistical properties of a non-SI but Gaussian random CMB sky. We use these coefficients to describe the weak lensing of CMB photons in a non-SI universe. Finally we show that the results reduce to the standard weak lensing results in the isotropic limit.

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Moumita Aich, Aditya Rotti, Tarun Souradeep. 2015-06-29. Weak lensing in non-statistically isotropic universes. https://arxiv.org/abs/1506.08806

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