New Global VLBI observations of the gravitational lensing system MG J0414+0534
astro-ph.CO
/ Authors
F. Volino, O. Wucknitz, R. W. Porcas, E. Ros, J. P. McKean, A. Brunthaler, J. A. Munoz, P. Castangia, M. A. Garrett, C. Henkel
and 2 more authors
/ 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.