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Microlensing of the broad emission line region in the lensed quasar J1004+4112 by Hutsemékers, Damien; Sluse, Dominique; Savić, Đorđe; Richards, Gordon T. is a scholarly article available to read on EtoBox.

What is Microlensing of the broad emission line region in the lensed quasar J1004+4112 about?

J1004+4112 is a lensed quasar for which the first broad emission line profile deformations due to microlensing were identified. Detailed interpretations of these features have nevertheless remained controversial. Based on 15 spectra obtained from 2003 to 2018, we revisit the microlensing effect that distorts the CIV broad emission line profile. We show that the microlensing-induced line profile distortions in image A, although variable, are remarkably similar over a period of 15 years. They are characterized by a strong magnification of the blue part of the line profile, a strong demagnification of the red part of the line profile, and a small-to-negligible demagnification of the line core. We used the microlensing effect to constrain the broad emission-line region (BLR) size, geometry, and kinematics. For this purpose, we modeled the deformation of the emission lines considering three simple, representative BLR models: a Keplerian disk, an equatorial wind, and a biconical polar wind, with various inclinations with respect to the line of sight. We find that the observed magnification profile of the CIV emission line can be reproduced with the simple BLR models we considered, withou

Author

Hutsemékers, Damien; Sluse, Dominique; Savić, Đorđe; Richards, Gordon T.

Published

2023

Language

EN