Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...396l..65j&link_type=abstract
Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 396, no. 2, Sept. 10, 1992, p. L65-L68. Research supported by Min
Astronomy and Astrophysics
Astronomy
56
Accretion Disks, Black Holes (Astronomy), Gravitational Lenses, Light Curve, Schwarzschild Metric, Astronomical Models, Luminosity, Quasars, Relativistic Effects
Scientific paper
Surface brightness maps for thin accretion disks around Schwarzschild and Kerr black holes are presented. These disks are a few times smaller than those used by Rauch and Blandford (1991), and some of the present models are slightly less luminous than theirs. Example of microlensed light curves are calculated by convolving these accretion disk maps with the magnification patterns obtained from microlensing calculations. The light curves exhibit eventlike variations with amplitudes and time scales comparable to those observed in QSO 2237 + 0305. It is concluded that thin thermal accretion disk models are not in contradiction with the observed microlens-induced variations of QSO 2237 + 0305.
Jaroszynski Michal
Paczyński Bohdan
Wambsganss Joachim
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