Maximum flux amplification by star disturbances in gravitational lens galaxies

Details Maximum flux amplification by star disturbances in gravitational lens galaxies Maximum flux amplification by star disturbances in gravitational lens galaxies

Jan 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984a%26a...130..157c&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 130, no. 1, Jan. 1984, p. 157-161.

Physics

Optics

39

Galactic Radiation, Gravitational Lenses, Radiant Flux Density, Approximation, Geometrical Optics, Point Sources, Stellar Gravitation, Wave Amplification

Scientific paper

The author considers the gravitational lens problem for a galaxy plus a "disturbing star" close to the light path. He has derived an analytic expression for the maximum amplification in flux density of a source, which is proportional to a constant K ("flux factor") and the inverse square root of the source diameter. He has also derived the analytic expression for the "flux factor" K, and present values of K for a range of the parameter γ which depends on the properties of the lensing galaxy.

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