The ring cycle - an iterative lens reconstruction technique applied to MG1131+0456

Details The ring cycle - an iterative lens reconstruction technique applied to MG1131+0456 The ring cycle - an iterative lens reconstruction technique applied to MG1131+0456

May 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989mnras.238...43k&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 238, May 1, 1989, p. 43-56.

Astronomy and Astrophysics

Astronomy

76

Galactic Clusters, Galactic Radiation, Gravitational Lenses, Image Reconstruction, Radio Galaxies, Astronomical Maps, Brightness Distribution, Figure Of Merit, Ring Structures

Scientific paper

A new technique for the analysis of well-resolved gravitational lens images is described. This method makes it possible to solve for the brightness distribution of the unlensed source as well as a parameterized model of the lens. The algorithm computes a figure of merit for a lens model based on the scatter in the surface brightnesses of image elements that, according to the model, come from the same source element. The method is applied to VLA maps of the 'Einstein ring' radio source MG1131+0456 observed by Hewitt et al. (1988).

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