Modeling the images of relativistic jets lensed by galaxies with different mass surface density distributions |
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| Authors: | T I Larchenkova A A Lutovinov N S Lyskova |
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| Institution: | 1.Astrospace Center, Lebedev Physical Institute,Russian Academy of Sciences,Moscow,Russia;2.Space Research Institute,Russian Academy of Sciences,Moscow,Russia;3.Moscow Institute of Physics and Technology,Dolgoprudnyi, Moscow oblast,Russia |
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| Abstract: | The images of relativistic jets from extragalactic sources produced by gravitational lensing by galaxies with different mass
surface density distributions are modeled. In particular, the following models of the gravitational lens mass distribution
are considered: a singular isothermal ellipsoid, an isothermal ellipsoid with a core, two- and three-component models with
a galactic disk, halo, and bulge. The modeled images are compared both between themselves and with available observations.
Different sets of parameters are shown to exist for the gravitationally lensed system B0218+357 in multicomponentmodels. These
sets allow the observed geometry of the system and the intensity ratio of the compact core images to be obtained, but they
lead to a significant spread in the Hubble constant determined from the modeling results. |
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