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The images of relativistic jets from extragalactic sources produced bygravitational lensing by galaxies with different mass surface densitydistributions are modeled. In particular, the following models of thegravitational lens mass distribution are considered: a singular isothermalellipsoid, an isothermal ellipsoid with a core, two- and three-component modelswith a galactic disk, halo, and bulge. The modeled images are compared bothbetween themselves and with available observations. Different sets ofparameters are shown to exist for the gravitationally lensed system B0218+357in multicomponent models. These sets allow the observed geometry of the systemand the intensity ratio of the compact core images to be obtained, but theylead to a significant variety in the Hubble constant determined from themodeling results.

Modeling the Images of Relativistic Jets Lensed by Galaxies with Different Mass Surface Density Distributions