MRLENS: Multi-Resolution methods for gravitational LENSing

Details MRLENS: Multi-Resolution methods for gravitational LENSing MRLENS: Multi-Resolution methods for gravitational LENSing

Feb 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011ascl.soft02005s&link_type=abstract

Astrophysics Source Code Library, record ascl:1102.005

Astronomy and Astrophysics

Astrophysics

Scientific paper

The MRLENS package offers a new method for the reconstruction of weak lensing mass maps. It uses the multiscale entropy concept, which is based on wavelets, and the False Discovery Rate which allows us to derive robust detection levels in wavelet space. We show that this new restoration approach outperforms several standard techniques currently used for weak shear mass reconstruction. This method can also be used to separate E and B modes in the shear field, and thus test for the presence of residual systematic effects. We concentrate on large blind cosmic shear surveys, and illustrate our results using simulated shear maps derived from N-Body Lambda-CDM simulations with added noise corresponding to both ground-based and space-based observations.

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