Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991a%26a...252..508g&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 252, no. 2, Dec. 1991, p. 508-512.
Astronomy and Astrophysics
Astrophysics
35
Gravitational Lenses, Light Curve, Luminous Intensity, Quasars, Computerized Simulation, Noise Reduction, Smoothing
Scientific paper
The idea is advanced that a 1D projection of the surface-brightness distribution of microlensed quasar can be reconstructed from the light curve of a high-amplitude event (HAE). Since the traditional reconstruction method leads to gross amplification of the noise, comparisons are made to the nontraditional approach by Craig and Brown (1986). The regularization method is applied to HAE light curves of quasars, and the results are compared to simulated light curves subjected to both the classical and regularization methods. The source profiles are obtained from approximately weekly observations at the appropriate frequency, and the known measuring errors are incorporated to stabilize the inversion. The regularization method is presented as a working method for treating current data that identifies microlensing events such as that associated with 2237 + 0305.
Grieger Bjoern
Kayser Rainer
Schramm Thomas
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