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Microlensing evidence for super-Eddington disk accretion in quasars

Published online by Cambridge University Press:  21 February 2013

Nikolai I. Shakura  and
Pavel Abolmasov
Nikolai I. Shakura
Affiliation:
Sternberg Astronomical Institute Universitetsky pr., 13, Moscow 119991, Russia email: pavel.abolmasov@gmail.com
Pavel Abolmasov
Affiliation:
Sternberg Astronomical Institute Universitetsky pr., 13, Moscow 119991, Russia email: pavel.abolmasov@gmail.com
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Abstract

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Gravitational microlensing by the stellar population of lensing galaxies provides an important opportunity to spatially resolve the accretion disk structure in strongly lensed quasars. Some of the objects (like Einstein's cross) are reasonably consistent with the predictions of the standard accretion disk model. In other cases, the size of the emitting region is larger than predicted by the standard thin disk theory and practically independent on wavelength. This may be interpreted as an observational manifestation of an optically-thick scattering envelope possibly related to super-Eddington accretion with outflows.

Keywords

accretionaccretion discsgravitational lensing: microquasars: general
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S290: Feeding Compact Objects: Accretion on All Scales , August 2012 , pp. 307 - 308
Copyright
Copyright © International Astronomical Union 2013

References

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