Gravitationally lensed QSOs in the ISSIS/WSO-UV era

Abstract

Gravitationally lensed QSOs (GLQs) at redshift z = 1-2 play a key role in understanding the cosmic evolution of the innermost parts of active galaxies (black holes, accretion disks, coronas and internal jets), as well as the structure of galaxies at intermediate redshifts. With respect to studies of normal QSOs, GLQ programmes have several advantages. For example, a monitoring of GLQs may lead to unambiguous detections of intrinsic and extrinsic variations. Both kinds of variations can be used to discuss central engines in distant QSOs, and mass distributions and compositions of lensing galaxies. In this context, UV data are of particular interest, since they correspond to emissions from the immediate surroundings of the supermassive black hole. We describe some observation strategies to analyse optically bright GLQs at z of about 1.5, using ISSIS (CfS) on board World Space Observatory-Ultraviolet.Comment: 7 pages, 4 figures, Accepted for publication in Astrophysics & Space Scienc

Accretion Onto the Supermassive Black Hole in the High-Redshift Radio-Loud Agn 0957+561

“…Preliminary records of B indicated the intrinsic origin of the observed variations (see Fig. 2 of Goicoechea et al 2011), so the reverberation mapping analysis in Section 3 unveils the nature of the accretion flow and its jet connection in a distant RLAGN for the first time. In Section 4 we present our main conclusions.…”

Crowded-field image simulator for WSO-UV/ISSIS: first functional version developed by the Glendama team

“…We belong to the WSO-UV/ISSIS Science Working Group, and are involved in the preparation of a large observation program to analyse optically-bright lensed quasars in the UV (Goicoechea et al 2011). 2 In more detail, using the CASTLES 3 and SQLS 4 databases, we selected 41 systems in the redshift interval 1 < z < 3.…”