Abstract
In this contribution, we treat the following aspects of gravitational microlensing: 1. the idea of Ostriker & Vietri that some BL Lac objects might be microlensed blazars, 2. the proposal that the variations of some optically violent variables (OVVs) might be the result of microlensing, and 3. the question if fore-ground galaxies of close angular separation will cause microlensing variability of quasars in a statistically significant manner. Indications for microlensing are only found concerning the third point.
Based on data collected at the German-Spanish Astronomical Centre, Calar Alto, operated by the Max-Planck-Institut für Astronomie (MPIA), Heidelberg, jointly with the Spanish National Commission for Astronomy
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© 1992 Springer-Verlag
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Borgeest, U., Schramm, J. (1992). Searching for microlensing in optical lightcurves of quasars. In: Kayser, R., Schramm, T., Nieser, L. (eds) Gravitational Lenses. Lecture Notes in Physics, vol 406. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-55797-0_97
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DOI: https://doi.org/10.1007/3-540-55797-0_97
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