Munshi, D. and Coles, Peter and Kilbinger, M. (2014) Tomography and weak lensing statistics. Journal of Cosmology and Astroparticle Physics, 2014 (04). 004. ISSN 1475-7516

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Abstract

We provide generic predictions for the lower order cumulants of weak lensing maps, and their correlators for tomographic bins as well as in three dimensions (3D). Using small-angle approximation, we derive the corresponding one- and two-point probability distribution function for the tomographic maps from different bins and for 3D convergence maps. The modelling of weak lensing statistics is obtained by adopting a detailed prescription for the underlying density contrast that involves hierarchal ansatz and lognormal distribution. We study the dependence of our results on cosmological parameters and source distributions corresponding to the realistic surveys such as LSST and DES. We briefly outline how photometric redshift information can be incorporated in our results. We also show how topological properties of convergence maps can be quantified using our results.

Item Type:	Article
Keywords:	weak gravitational lensing; dark matter theory; dark energy theory;
Academic Unit:	Faculty of Science and Engineering > Theoretical Physics
Item ID:	12505
Identification Number:	https://doi.org/10.1088/1475-7516/2014/04/004
Depositing User:	Peter Coles
Date Deposited:	03 Mar 2020 16:51
Journal or Publication Title:	Journal of Cosmology and Astroparticle Physics
Publisher:	IOP Publishing
Refereed:	Yes
URI:	Publisher
Use Licence:	This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here

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