Abstract
Some predictions for the frequency and the maximum brightness variation (in magnitude) of high magnification events (HMEs) of image A of 2237+0305 are presented. Three different models for the simulations are used. If we consider the observed brightness variation of image A in August/September 1988 (Δm = 0.2 – 0.3 mag in 26 days) the simulations indicate that it is very likely that low mass stars (< 0.1M ⊙) are contained in the centre of the lensing galaxy and that the effective transverse velocity between the caustic network and the source must be vT >≈ 5000 km/s.
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© 1992 Springer-Verlag
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Witt, H.J. (1992). Microlensing predictions for the Einstein cross 2237+0305. 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_99
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DOI: https://doi.org/10.1007/3-540-55797-0_99
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