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27 papers
Microlensing analysis of 14.5-year light curves in SDSS J1004+4112: Quasar accretion disk size and intracluster stellar mass fraction
R. Forés-Toribio, J. A. Muñoz, C. Fian +2
Context. The gravitational lens system SDSS J1004+4112 was the first known example of a quasar lensed by a galaxy cluster. The interest in this system has been renewed following th…
Quasar Microlensing Statistics and Flux-Ratio Anomalies in Lens Models
E. Mediavilla, J. Jiménez-Vicente, V. Motta
Precise lens modeling is a critical step in time delay studies of multiply imaged quasars, which are key for measuring some important cosmological parameters (specially ). How…
Probing the structure of the lensed quasar SDSS J1004+4112 through microlensing analysis of spectroscopic data
C. Fian, J. A. Muñoz, R. Forés-Toribio +5
We aim to reveal the sizes of the continuum and broad emission line (BEL) emitting regions in the gravitationally lensed quasar SDSS J1004+4112 by analyzing the unique signatures o…
Astro2020 Science White Paper - Quasar Microlensing: Revolutionizing our Understanding of Quasar Structure and Dynamics
Leonidas Moustakas, Matthew O'Dowd, Timo Anguita +20
Microlensing by stars within distant galaxies acting as strong gravitational lenses of multiply-imaged quasars, provides a unique and direct measurement of the internal structure o…
Probing the Broad Line Region and the Accretion Disk in the Lensed Quasars HE0435-1223, WFI2033-4723, and HE2149-2745 using Gravitational Microlensing
V. Motta, E. Mediavilla, K. Rojas +3
We use single-epoch spectroscopy of three gravitationally lensed quasars, HE0435-1223, WFI2033-4723, and HE2149-2745, to study their inner structure (BLR and continuum source). We…
Peculiar Transverse Velocities of Galaxies from Quasar Microlensing. Tentative Estimate of the Peculiar Velocity Dispersion at
E. Mediavilla, J. Jimenez-Vicente, J. A. Munoz +1
We propose to use the flux variability of lensed quasar images induced by gravitational microlensing to measure the transverse peculiar velocity of lens galaxies over a wide range…