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arxiv: 1011.6652 · v1 · pith:JAZQJERBnew · submitted 2010-11-30 · 🌌 astro-ph.CO

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
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M.A. Garrett C. Henkel C.M.V. Impellizzeri A. Roy
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keywords systemellipticalgalaxygravitationalj0414lenslensingobservations
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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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