Comparison of halo detection from noisy weak lensing convergence maps with Gaussian smoothing and MRLens treatment

Taking into account the noise from intrinsic ellipticities of source galaxies,we study the efficiency and completeness of halo detections from weak lensing convergence maps.Particularly,with numerical simulations,we compare the Gaussian filter with the so called MRLens treatment based on the modification of the Maximum Entropy Method.For a pure noise field without lensing signals,a Gaussian smoothing results in a residual noise field that is approximately Gaussian in terms of statistics if a large enough nu...