Gravitational microlensing by a single star plus external shear

Details Gravitational microlensing by a single star plus external shear Gravitational microlensing by a single star plus external shear

Apr 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...389...63m&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 389, April 10, 1992, p. 63-67.

Statistics

Computation

36

Caustics (Optics), Gravitational Lenses, Magnification, Probability Distribution Functions, Stellar Mass, Computational Astrophysics, Double Stars, Mass Distribution

Scientific paper

Gravitational microlensing by a single star plus external shear is considered. It is shown that for a general cusp the magnification probability distribution follows pc(A)dA of about (A exp -7/2)dA for sufficiently large magnifications. An adaptive grid technique is developed to calculate the magnification probability distributions. The results could be useful for cases of microlensing where the surface-mass density is low.

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