Publikace na Matematicko-fyzikální fakulta |
2018
Abstrakt
Weak gravitational lensing by galaxy clusters and larger structures is a powerful tool for mapping the distribution of matter in the universe. The lensing description is generally based on continuous matter distributions, which in the case of a cluster neglects the influence of its individual galaxies.
These may distort the images of background galaxies and affect the reconstructed matter distribution. We study the effect using a continuous dark matter halo model perturbed by a point mass.