Results of optical monitoring of 5 SDSS double QSOs with the Nordic Optical Telescope

Abstract

We present optical R-band light curves of five SDSS double QSOs (SDSS J0903+5028, SDSS J1001+5027, SDSS J1206+4332, SDSS J1353+1138, SDSS J1335+0118) obtained from monitoring at the Nordic Optical Telescope (NOT) between September 2005 and September 2007. We also present analytical and pixelated modeling of the observed systems. For SDSS J1206+4332, we measured the time delay to be 116 days, which, for a Singular Isothermal Ellipsoid model, corresponds to a Hubble constant of 73 km/s/Mpc. Simultaneous pixeleted modeling of five other systems for which a time delay has now been previously measured at the NOT leads to H_0 = 61.5 km/s/Mpc. Finally, by comparing lightcurves of the two images of each system, suitably shifted by the predicted or observed time-delays, we found no evidence for microlensing variability over the course of the monitoring period.

16 pages, 30 figures

References in corpus (17)

• A Bayesian approach to strong lensing modelling of galaxy clusters
• The Sloan Lens ACS Survey. III - The Structure and Formation of Early-type Galaxies and their Evolution since z~1
• Gravitational Lens Time Delays: A Statistical Assessment of Lens Model Dependences and Implications for the Global Hubble Constant
• A portable modeler of lensed quasars
• The Rewards of Patience: An 822 Day Time Delay in the Gravitational Lens SDSS J1004+4112
• The Hubble time inferred from 10 time-delay lenses
• The dependence of quasar variability on black hole mass
• COSMOGRAIL: the COSmological MOnitoring of GRAvItational Lenses III. Redshift of the lensing galaxy in eight gravitationally lensed quasars
• Discovery of Two Gravitationally Lensed Quasars with Image Separations of 3 Arcseconds from the Sloan Digital Sky Survey
• Extinction Curves of Lensing Galaxies out to z=1
• The time delay of the quadruple quasar RX J0911.4+0551
• A New Estimate of the Hubble Time with Improved Modeling of Gravitational Lenses
• An optical time delay for the double gravitational lens system FBQ 0951+2635
• COSMOGRAIL: the COSmological MOnitoring of GRAvItational Lenses II. SDSS J0924+0219: the redshift of the lensing galaxy, the quasar spectral variability and the Einstein rings
• COSMOGRAIL: the COSmological MOnitoring of GRAvItational Lenses V. The time delay in SDSS J1650+4251
• SDSS J0806+2006 and SDSS J1353+1138: Two New Gravitationally Lensed Quasars from the Sloan Digital Sky Survey
• Microlensing variability in time-delay quasars

Cited by in corpus (14)

• Strong Lensing by Galaxies
• Dissecting the Gravitational Lens B1608+656. II. Precision Measurements of the Hubble Constant, Spatial Curvature, and the Dark Energy Equation of State
• The mass-sheet degeneracy and time-delay cosmography: Analysis of the strong lens RXJ1131-1231
• Strong lensing time-delay cosmography in the 2020s
• Improving the precision of time-delay cosmography with observations of galaxies along the line of sight
• Improved Constraints on the Gravitational Lens Q0957+561. II. Strong Lensing
• COSMOGRAIL: the COSmological MOnitoring of GRAvItational Lenses XII. Time delays of the doubly lensed quasars SDSS J1206+4332 and HS 2209+1914
• Cosmography from two-image lens systems: overcoming the lens profile slope degeneracy
• The Hubble constant inferred from 18 time-delay lenses
• Follow-up Analyses to the O3 LIGO-Virgo-KAGRA Lensing Searches
• Observational selection biases in time-delay strong lensing and their impact on cosmography
• Time delays for 11 gravitationally lensed quasars revisited
• Peculiar Transverse Velocities of Galaxies from Quasar Microlensing. Tentative Estimate of the Peculiar Velocity Dispersion at $z\sim 0.5$
• Bayesian approach to gravitational lens model selection: constraining H_0 with a selected sample of strong lenses