Imaging procedures for gravitational lenses

Details Imaging procedures for gravitational lenses Imaging procedures for gravitational lenses

Feb 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988a%26a...191...39k&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 191, no. 1, Feb. 1988, p. 39-43.

Astronomy and Astrophysics

Astrophysics

28

Digital Simulation, Galaxies, Gravitational Lenses, Imaging Techniques, Quasars

Scientific paper

Finding the positions, shapes and apparent brightnesses of images for given gravitational lens models is not a trivial task, since no global analytical inversion of the lens equation exists. The authors present here new numerical imaging procedures, which avoid the need for an inversion of the lens equation. The procedures are based on the principle of the conservation of surface brightness under gravitational deflection of light. The new imaging procedures lead to considerable simplifications in numerical simulations of deflector models for observed lens situations.

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