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Time-Domain Studies of Gravitationally Lensed Quasars

Published online by Cambridge University Press:  20 April 2012

Luis J. Goicoechea  and
Vyacheslav N. Shalyapin
Luis J. Goicoechea
Affiliation:
Dept. de Física Moderna, Universidad de Cantabria, ES-39005, Santander, Spain email: [email protected]
Vyacheslav N. Shalyapin
Affiliation:
Dept. de Física Moderna, Universidad de Cantabria, ES-39005, Santander, Spain email: [email protected] Inst. Radiophys. & Elect., Nat. Acad. Sci. Ukraine, UA-61085, Kharkov, Ukraine email: [email protected]
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Abstract

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We present an overview and current results of an ongoing optical/NIR monitoring of seven gravitationally-lensed quasars (GLQs) with the 2-m Liverpool Robotic Telescope. The photometric data from the first seven years (2005–2011) of this programme are leading to high-quality light curves, which in turn are being used as key tools for different standard and novel studies. While brightness records of non-lensed distant quasars may contain unrecognized extrinsic variations, one can disentangle intrinsic from extrinsic signals in certain GLQs. Thus, some GLQs in our sample allow us to assess their extrinsic and intrinsic variations; we then discuss the origin of both kinds of fluctuations. We also demonstrate the usefulness of GLQ time-domain data for obtaining successful reverberation maps of the inner regions of accretion disks around distant supermassive black holes, and for estimating the redshifts of distant lensing galaxies.

Keywords

gravitational lensingblack hole physicsaccretiongalaxies: generalquasars: general
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 7 , Symposium S285: New Horizons in Time-Domain Astronomy , September 2011 , pp. 315 - 317
Copyright
Copyright © International Astronomical Union 2012

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