Optical scalars and the spherical gravitational lens

Details Optical scalars and the spherical gravitational lens Optical scalars and the spherical gravitational lens

Jul 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977mnras.180..231d&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 180, July 1977, p. 231-242. Research supported by the National Research

Physics

Optics

29

Gravitational Lenses, Interstellar Matter, Mass Distribution, Physical Optics, Astrophysics, Deflection, Light Beams, Wave Amplification, Wave Propagation

Scientific paper

The optical scalar equations of Sachs are used to consider the gravitational lens effect of a static, spherically symmetric mass distribution. Two approaches are used, the first of which is an exact treatment of the bending approach used by Liebes and others, but without the restrictions imposed by the limited applicability of the Einstein bending formula. The second approach emphasizes the close relationship between the optical parameters and the physical parameters associated with the mass distribution. This is useful in astrophysical applications, since we can often treat a realistic case by making small perturbations from some simple case.

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