Weak gravitational lensing is a powerful statistical tool for probing the expansion of cosmic structure and measuring cosmological parameters. However, as shown by research corresponding to Ménard et al. 2010), mud within the circumgalactic area of haloes dims and reddens background sources. To model the mud distribution we employ the halo mannequin. Assuming a fiducial dust mass profile based on measurements from Ménard et al. 2010), we compute the ratio Z𝑍Z of the systematic error to the statistical error for a survey just like the Nancy Grace Roman Space Telescope reference survey (2000 deg2 space, single-filter efficient source density 30 galaxies arcmin-2). 1, the systematic impact of mud will likely be vital on weak lensing picture surveys. Cosmological parameters from massive-scale construction - weak gravitational lensing - circumgalactic medium. One of the main goals in trendy cosmology is to characterize and Wood Ranger official understand the accelerated growth of the Universe (Riess et al., 1998