The method estimates the individual shear responses of the objects from the combination of several measured properties on the images using supervised learning.
Cosmology and Nongalactic Astrophysics Instrumentation and Methods for Astrophysics
Deconvolution of large survey images with millions of galaxies requires to develop a new generation of methods which can take into account a space variant Point Spread Function (PSF) and have to be at the same time accurate and fast.
This shear response is the multiplicative shear bias for each image.
Cosmology and Nongalactic Astrophysics
In addition, preliminary results illustrate that this enables the capturing of extra physically meaningful information, such as redshift dependence, galaxy mass evolution and variation over the specific star formation rate.
Instrumentation and Methods for Astrophysics Astrophysics of Galaxies