Simulation of Color Variations in Gravitationally Lensed Quasar Q2237+0305 (the Einstein Cross)

A mechanism of colorized phenomena in gravitationally lensed quasar Q2237+0305 due to microlensing is analysed in computer simulation. A two-component quasar spatial structure model consisting of a hot central source surrounded by an extended outer structure with a more low-temperature radiation was proposed. The model was shown to provide relationship between variations of the (V - I) color indices and R magnitudes, which is consistent to the observed one presented in our recent publication.