A small source in Q 2237 + 0305 ?


Microlensing in Q2237+0305 between 1985 and 1995 (eg. Irwin et al. 1989; Corrigan et al 1991; Østensen et al. 1996) has been interpreted in two different ways. Firstly, the observed variations can be explained through microlensing by stellar mass objects of a continuum source with dimensions significantly smaller than the microlens Einstein radius (ηo), but… (More)


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