ON THE MAGNIFICATION OF GRAVITATIONAL LENS IMAGES NEAR CUSPS

Authors
ZAKHAROV AF
Citation
Af. Zakharov, ON THE MAGNIFICATION OF GRAVITATIONAL LENS IMAGES NEAR CUSPS, Astronomy and astrophysics, 293(1), 1995, pp. 1-4
Citations number
12
Categorie Soggetti
Astronomy & Astrophysics
Journal title
Astronomy and astrophysics → ACNP
ISSN journal
00046361
Volume
293
Issue
1
Year of publication
1995
Pages
1 - 4
Database
ISI
SICI code
0004-6361(1995)293:1<1:OTMOGL>2.0.ZU;2-A
Abstract
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 thir d degree we slightly generalize the Schneider & Weiss statement on the magnification near different solutions of the gravitational lens equa tion. The analytical expressions for magnifications of different image s near the cusp are presented.