The accurate modelling of the point spread function (PSF) is of paramount importance in
astronomical observations, as it allows for the correction of distortions and blurring caused …

Forthcoming space-based observations will require high-quality point spread function (PSF)
models for weak gravitational lensing measurements. One approach to generating these …

Weak gravitational lensing is one of the most powerful tools for cosmology, while subject to
challenges in quantifying subtle systematic biases. The point spread function (PSF) can …

Weak lensing is one of the most powerful probes for dark matter and dark energy science,
although it faces increasing challenges in controlling systematic uncertainties as the …

With mock strong gravitational lensing images, we investigate the performance of the broken
power-law (BPL) model proposed by Du et al.(2020) on the mass reconstruction of galaxy …

Point spread function (PSF) modelling is a central part of any astronomy data analysis
relying on measuring the shapes of objects. It is especially crucial for weak gravitational …

Context. Galaxy imaging surveys observe a vast number of objects, which are ultimately
affected by the instrument's point spread function (PSF). It is weak lensing missions in …

The convolution of galaxy images by the point spread function (PSF) is the dominant source
of bias for weak gravitational lensing studies, and an accurate estimate of the PSF is …

A simple theoretical framework for the description and interpretation of spatially correlated
modelling residuals is presented, and the resulting tools are found to provide a useful aid to …

As light propagates through the Universe, its path is altered by the presence of massive
objects. This causes a distortion of the images of distant galaxies. Measuring this effect …