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Observations of lensed relativistic jets as a tool for constraining lens galaxy parameters

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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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Authors and Affiliations

  1. Astrospace Center, Lebedev Physical Institute, Russian Academy of Sciences, Profsoyuznaya ul. 84/32, Moscow, 117997, Russia

    T. I. Larchenkova

  2. Moscow Institute of Physics and Technology, Institutskii per. 9, Dolgoprudnyi, Moscow obl., 141700, Russia

    N. S. Lyskova

  3. Space Research Institute, Russian Academy of Sciences, Profsoyuznaya ul. 84/32, Moscow, 117997, Russia

    A. A. Lutovinov

Authors
  1. T. I. Larchenkova
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  2. N. S. Lyskova
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  3. A. A. Lutovinov
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Correspondence to T. I. Larchenkova.

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Original Russian Text © T.I. Larchenkova, N.S. Lyskova, A.A. Lutovinov, 2011, published in Pis’ma v Astronomicheskiĭ Zhurnal, 2011, Vol. 37, No. 7, pp. 483–490.

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Larchenkova, T.I., Lyskova, N.S. & Lutovinov, A.A. Observations of lensed relativistic jets as a tool for constraining lens galaxy parameters. Astron. Lett. 37, 441–447 (2011). https://doi.org/10.1134/S1063773711070024

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  • DOI: https://doi.org/10.1134/S1063773711070024

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