VLBI imaging of the gravitational lens MG J0414+0534

Bibcode
2000A&A...362..845R
Ros, E.; Guirado, J. C.; Marcaide, J. M.; Pérez-Torres, M. A.; Falco, E. E.; Muñoz, J. A.; Alberdi, A.; Lara, L.
Bibliographical reference

Astronomy and Astrophysics, v.362, p.845-850 (2000)

Advertised on:
10
2000
Journal
Astronomy and Astrophysics
Number of authors
8
IAC number of authors
1
Citations
48
Refereed citations
43
Description
We observed the quadruple gravitationally lensed image of MG J0414+0534 on 23 November 1997 with a global VLBI array at 8.4 GHz. We report wide-field imaging results of its four components at submilliarcsecond resolution, displaying complex core-like and jet-like extended structures. A simple model combining a singular isothermal ellipsoid to represent the main lens galaxy, external shear, and a singular isothermal sphere to represent an additional, nearby object accounts well for the core positions and flux densities of the VLBI images. This model predicts delays between the different lensed images of several weeks.
Type
Refereed
Techniques
Galaxies
Jets
Quasars
Cosmology
Gravitational lensing

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