New Global VLBI observations of the gravitational lensing system MG J0414+0534

F. Volino; O. Wucknitz; R. W. Porcas; E. Ros; J. P. McKean; A. Brunthaler; J. A. Munoz; P. Castangia; M. A. Garrett; C. Henkel; C. M. V. Impellizzeri; A. Roy

arXiv · 1011.6652

New Global VLBI observations of the gravitational lensing system MG J0414+0534

F. Volino·O. Wucknitz·R. W. Porcas·E. Ros·J. P. McKean·A. Brunthaler·J. A. Munoz·P. Castangia·M. A. Garrett·C. Henkel·C. M. V. Impellizzeri·A. Roy

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Abstract

The gravitational lens system MG J0414+0534 is formed by an elliptical galaxy at redshift ~0.96 and a quasar at z~2.64. The system geometry is typical of lensing by an elliptical galaxy with the QSO close to and inside a fold caustic. It shows 4 images of the background source, and a partial Einstein ring is visible at optical wavelengths. It was observed with a global-VLBI array at 18 cm in June 2008. We present here the imaging results and a preliminary lens model constrained by these observations.

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F. Volino, O. Wucknitz, R. W. Porcas, E. Ros, J. P. McKean, A. Brunthaler, J. A. Munoz, P. Castangia, M. A. Garrett, C. Henkel, C. M. V. Impellizzeri, A. Roy. 2010-11-30. New Global VLBI observations of the gravitational lensing system MG J0414+0534. https://arxiv.org/abs/1011.6652

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