Published in
Cambridge University Press (CUP), Publications of the Astronomical Society of Australia, 2(18), p. 166-168, 2001
DOI: 10.1071/as01015
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Mid-Infrared Imaging of the Einstein Cross QSO
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Abstract
AbstractObservations of the Einstein Cross QSO reveal that the mid-infrared region is unaffected by microlensing. Thus, the infrared emission region must be extended on a scale >1017 cm, ruling out synchrotron models, but consistent with dust emission models. Other constraints rule out starburst models. The flux ratios greatly constrain the lens model.
