Gravitational microlensing.

Details Gravitational microlensing. Gravitational microlensing.

Oct 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990grmi.book.....w&link_type=abstract

Gravitational microlensing., by Wambsganß, J.. Max-Planck-Institut für Physik und Astrophysik, Garching (Germany). Inst. für Ast

Astronomy and Astrophysics

Astrophysics

9

Scientific paper

This thesis is an investigation of the phenomenon of gravitational microlensing, i.e., the gravitational lens effect of individual stars inside a lensing galaxy on the light rays of a background quasar. After a brief look into the history of gravitational light deflection, an introduction to the basics of gravitational lensing is given, and the current state of the art in observations as well as in theory is summed up. The method that is used for the simulation of the gravitational light deflection is based on a hierarchical tree code which is optimized for the application in gravitational lensing. As an application, a microlensing model for image A of the quadruple quasar 2237+0305 is developed.

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