Gravitational lensing in a universe model with realistic mass distribution

Details Gravitational lensing in a universe model with realistic mass distribution Gravitational lensing in a universe model with realistic mass distribution

Apr 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991mnras.249..430j&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 249, April 1, 1991, p. 430-438. Polish Academy of Scien

Mathematics

Logic

35

Gravitational Lenses, Light Transmission, Mass Distribution, Propagation Modes, Universe, Extraterrestrial Radiation, Galactic Mass, Interstellar Matter, Monte Carlo Method, Red Shift

Scientific paper

The light propagation in an inhomogeneous universe is studied using Monte Carlo methods. The model of matter distribution includes galaxies of different masses and radii and position correlations. Different cosmological models are taken into account. The light beams are allowed to scatter several times between a source and the observer due to gravitational deflection caused by galaxies at different redshifts. The effects of microlensing are included in further approximation. Correlations in galaxy positions increase the probability of observing a distant source highly amplified by foreground gravitational lenses.

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