Improving weak lensing mass map reconstructions using Gaussian and sparsity priors: application to DES SV
- Jeffrey, N.
- Abdalla, F. B.
- Lahav, O.
- Lanusse, F.
- Starck, J. -L.
- Leonard, A.
- Kirk, D.
- Chang, C.
- Baxter, E.
- Kacprzak, T.
- Seitz, S.
- Vikram, V.
- Whiteway, L.
- Abbott, T. M. C.
- Allam, S.
- Avila, S.
- Bertin, E.
- Brooks, D.
- Carnero Rosell, A.
- Kind, M. Carrasco
- Carretero, J.
- Castander, F. J.
- Crocce, M.
- Cunha, C. E.
- D'Andrea, C. B.
- da Costa, L. N.
- Davis, C.
- De Vicente, J.
- Desai, S.
- Doel, P.
- Eifler, T. F.
- Evrard, A. E.
- Flaugher, B.
- Fosalba, P.
- Frieman, J.
- Garcia-Bellido, J.
- Gerdes, D. W.
- Gruen, D.
- Gruendl, R. A.
- Gschwend, J.
- Gutierrez, G.
- Hartley, W. G.
- Honscheid, K.
- Hoyle, B.
- James, D. J.
- Jarvis, M.
- Kuehn, K.
- Lima, M.
- Lin, H.
- March, M.
- Melchior, P.
- Menanteau, F.
- Miquel, R.
- Plazas, A. A.
- Reil, K.
- Roodman, A.
- Sanchez, E.
- Scarpine, V.
- Schubnell, M.
- Sevilla-Noarbe, I.
- Smith, M.
- Soares-Santos, M.
- Sobreira, F.
- Suchyta, E.
- Swanson, M. E. C.
- Tarle, G.
- Thomas, D.
- Walker, A. R.
DOIAbstract
Mapping the underlying density field, including non-visible dark matter, using weak gravitational lensing measurements is now a standard tool in cosmology. Due to its importance to the science results of current and upcoming surveys, the quality of the convergence reconstruction methods should be well understood. We compare three methods: Kaiser-Squires (KS), Wiener filter, and GLIMPSE. Kaiser-Squires is a direct inversion, not accounting for survey masks or noise. The Wiener filter is well-motivated for Gaussian density fields in a Bayesian framework. GLIMPSE uses sparsity, aiming to reconstruct non-linearities in the density field. We compare these methods with several tests using public Dark Energy Survey (DES) Science Verification (SV) ...
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