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Continuum reverberation mapping in a z = 1.41 radio-loud quasar

Abstract: Q0957+561 was the first discovered gravitationally lensed quasar. The mirage shows two images of a radio-loud quasar at redshift z = 1.41. The time lag between these two images is well established around one year. We detected a very prominent variation in the optical brightness of Q0957+561A at the beginning of 2009, which allowed us to predict the presence of significant intrinsic variations in multi-wavelength light curves of Q0957+561B over the first semester of 2010. To study the predicted brightness fluctuations of Q0957+561B, we conducted an X-ray, NUV, optical and NIR monitoring campaign using both ground-based and space-based facilities. The continuum NUV-optical light curves revealed evidence of a centrally irradiated, standard accretion disk. In this paper, we focus on the radial structure of the standard accretion disk and the nature of the central irradiating source in the distant radio-loud active galactic nucleus (AGN).

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

 Congreso: AHAR 2011. Astronomy at High Angular Resolution (2011:Bad Honnef, Alemania)

Editorial: Institute of Physics

 Año de publicación: 2012

Nº de páginas: 6

Tipo de publicación: Comunicación a Congreso

 DOI: 10.1088/1742-6596/372/1/012058

ISSN: 1742-6588,1742-6596

 Proyecto español: ESP2006-13608-C02-01

Url de la publicación: https://doi.org/10.1088/1742-6596/372/1/012058