# Microlensing variability in the gravitationally lensed quasar QSO 2237+0305 ≡ the Einstein Cross II. Energy profile of the accretion disk ,

@article{Eigenbrod2008MicrolensingVI,
title={Microlensing variability in the gravitationally lensed quasar QSO 2237+0305 ≡ the Einstein Cross II. Energy profile of the accretion disk ,},
author={Alexander Eigenbrod and Fr{\'e}d{\'e}ric Courbin and Georges Meylan and Eric Agol and Timo Anguita and Robert W. Schmidt and John M. Kolinski 'Ecole Polytechnique F'ed'erale de Lausanne and Switzerland. and University of Washington and Usa and Astronomisches Rechen-Institut and Heidelberg and H Germany},
journal={Astronomy and Astrophysics},
year={2008},
volume={490},
pages={933-943}
}
• Published 30 September 2008
• Physics
• Astronomy and Astrophysics
We present the continuation of our long-term spectroscopic monitoring of the gravitationally lensed quasar QSO 2237 + 0305. We investigate the chromatic variations observed in the UV/optical continuum of both quasar images A and B, and compare them with numerical simulations to infer the energy profile of the quasar accretion disk. Our procedure combines the microlensing ray-shooting technique with Bayesian analysis, and derives probability distributions for the source sizes as a function of…
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