Observations of lensed relativistic jets as a tool for constraining lens galaxy parameters |
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| Authors: | T I Larchenkova N S Lyskova A A Lutovinov |
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| Institution: | 1.Astrospace Center, Lebedev Physical Institute,Russian Academy of Sciences,Moscow,Russia;2.Moscow Institute of Physics and Technology,Dolgoprudnyi, Moscow obl.,Russia;3.Space Research Institute,Russian Academy of Sciences,Moscow,Russia |
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| Abstract: | The possibility of using lensed relativistic jets on very small angular scales to construct proper models of spiral lens galaxies
and to independently determine the Hubble constant is considered. The system B0218+357 is used as an example to illustrate
that there exists a great choice of model parameters adequately reproducing its observed large-scale properties but leading
to a significant spread in the Hubble constant. The jet image position angle is suggested as an additional parameter that
allows the range of models under consideration to be limited. It is shown that themodels for which the jet image position
angles differ by at least 40° can be distinguished between themselves during observations on very small angular scales. The
possibility of observing the geometric properties of lensed relativistic jets and measuring the superluminal velocities of
knot images on time scales of several months with very long baseline space interferometers is discussed. |
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