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    Tomography and weak lensing statistics

    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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    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:
    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
    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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