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Q2237+0305 source structure and dimensions from light curves simulation
V. G. Vakulik, R. E. Schild, G. V. Smirnov +2
Assuming a two-component quasar structure model consisting of a central compact source and an extended outer feature, we produce microlensing simulations for a population of star-l…
Observational determination of the time delays in gravitational lens system Q2237+030
V. Vakulik, R. Schild, V. Dudinov +4
We present new brightness monitoring observations of the 4 components of gravitationally lensed system Q2237+0305, which show detection of an intrinsic quasar brightness fluctuatio…
Around the Clock Observations of the Q0957+561 A,B Gravitationally Lensed Quasar II: Results for the second observing season
Wesley N. Colley, Rudolph E. Schild, Cristina Abajas +35
We report on an observing campaign in March 2001 to monitor the brightness of the later arriving Q0957+561 B image in order to compare with the previously published brightness obse…