A diffraction limit on the gravitational lens effect

Details A diffraction limit on the gravitational lens effect A diffraction limit on the gravitational lens effect

Aug 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981ap%26ss..78..199b&link_type=abstract

Astrophysics and Space Science, vol. 78, no. 1, Aug. 1981, p. 199-210.

Physics

Optics

16

Focusing, Gravitational Lenses, Gravitational Waves, Wave Diffraction, Caustics (Optics), Geometrical Optics

Scientific paper

The focussing of gravitational radiation by the interior and exterior gravitational field of a Newtonian gravitational lens is considered. A graphical method for determining the caustic structure of a Newtonian gravitational lens is presented, and the caustic structure of a solar type gravitational lens is discussed. Estimates of the amplitude magnification in the caustic region indicate that waves with frequencies less than a critical cutoff frequency are not amplified significantly. For a lens of mass M, this cutoff frequency is approximately equal to the reciprocal of 0.1 x Pi x M; for the sun, the cutoff frequency is approximately 1000/sec.

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