Fast multiscale galaxy cluster detection with weak lensing: towards a mass-selected sample

Understand

The sensitivity and wide area reached by ongoing and future wide-field optical surveys allows for the detection of an increasing number of galaxy clusters uniquely through their weak lensing (WL) signal.

• This motivates the development of new methods to analyse the unprecedented volume of data faster and more efficiently.
• Here we introduce a new multi-scale WL detection method based on application of wavelet filters to the convergence maps.
• We compare our results to those obtained from four commonly-used single scale approaches based on the application of aperture mass filters to the shear in real and Fourier space.