Mathematics – Probability
Scientific paper
Aug 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994a%26a...288...19s&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 288, no. 1, p. 19-29
Mathematics
Probability
16
Autocorrelation, Gravitational Lenses, Light Curve, Magnification, Quasars, Variability, Analysis (Mathematics), Deflection, Probability Distribution Functions, Probability Theory
Scientific paper
Using the method of correlated deflection probabilities of microlensed light rays, we show how to determine the magnification auto-correlation function and the magnification fluctuations in various microlensing situations. We compare our results with those obtained with other methods, and investigate the practical limitations inherent in the ray-shooting method: finite resolution, and the problem of fair sampling of the source plane. We apply our method to the observed light curve of the microlensed image A of Q2237+0305 and determine correlation times and magnification fluctuations. We conclude that it is possible to explain this light curve with low-mass lenses.
Schneider Peter
Seitz Carolin
Wambsganss Joachim
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