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Multi-wave monitoring of the gravitational lensed quasar Q0957+561

Abstract: We present X-ray (CHANDRA), ultraviolet (SWIFT/UVOT; U band) and optical-infrared (Liverpool Telescope; griz bands) continuum light curves of Q0957+561 observed in the first half of 2010. A cross-correlation analysis of the light curves shows that the U-band fluctuation leads the other variations at higher and lower energies. The study constrains the geometry of the continuum emission regions in a distant radio-loud AGN for the first time. We note that our work opens a new window in echo-mapping of high-z AGNs with the use of lensed quasars, since the variability of some of the images of a given multiply-imaged quasar can be predicted in advance, provided there is a modest optical follow-up of the system.

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 Autoría: Shalyapin V., Goicoechea L., Gil-Merino R.,

 Congreso: International Astronomical Union. Symposium S285: New Horizons in Time-Domain Astronomy (2011. Oxford)

Editorial: Cambridge University Press

 Año de publicación: 2011

Nº de páginas: 2

Tipo de publicación: Comunicación a Congreso

 DOI: 10.1017/S1743921312001238

ISSN: 1743-9213,1743-9221

Url de la publicación: https://doi.org/10.1017/S1743921312001238