On the magnification of gravitational lens images near cusps.

Details On the magnification of gravitational lens images near cusps. On the magnification of gravitational lens images near cusps.

Jan 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995a%26a...293....1z&link_type=abstract

Astronomy and Astrophysics 293, 1-4 (1995)

Astronomy and Astrophysics

Astrophysics

47

Gravitational Lensing

Scientific paper

On the base of the gravitational lens equation obtained by Schneider & Weiss the magnification of images near a cusp is investigated. Using the symmetrical polynomials on the roots of the polynomial of the third degree we slightly generalize the Schneider & Weiss statement on the magnification near different solutions of the gravitational lens equation. The analytical expressions for magnifications of different images near the cusp are presented.

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