44 citations · 140 across the 10 of their papers we have counts for
10 papers
Gaia GraL: Gaia gravitational lens systems IX. Using XGBoost to explore the Gaia Focused Product Release GravLens catalogue
Quentin Petit, Christine Ducourant, Eric Slezak +21
Aims. Quasar strong gravitational lenses are important tools for putting constraints on the dark matter distribution, dark energy contribution, and the Hubble-Lemaitre parameter. W…
The fifth data release of the Kilo Degree Survey: Multi-epoch optical/NIR imaging covering wide and legacy-calibration fields
Angus H. Wright, Konrad Kuijken, Hendrik Hildebrandt +51
We present the final data release of the Kilo-Degree Survey (KiDS-DR5), a public European Southern Observatory (ESO) wide-field imaging survey optimised for weak gravitational lens…
GraL spectroscopic identification of multiply imaged quasars
Priyanka Jalan, Vibhore Negi, Jean Surdej +24
Gravitational lensing is proven to be one of the most efficient tools for studying the Universe. The spectral confirmation of such sources requires extensive calibration. This pape…
Gaia GraL: Gaia DR2 Gravitational Lens Systems. VIII. A radio census of lensed systems
Dougal Dobie, Dominique Sluse, Adam Deller +26
We present radio observations of 24 confirmed and candidate strongly lensed quasars identified by the Gaia Gravitational Lenses (GraL) working group. We detect radio emission from…
An empirical relation to estimate host galaxy stellar light from AGN spectra
Priyanka Jalan, Suvendu Rakshit, Jong-Hak Woo +2
Measurement of black hole mass for low- () Active Galactic Nuclei (AGNs) is difficult due to the strong contribution from host galaxy stellar light necessitating deta…
Gaia GraL: Gaia DR2 Gravitational Lens Systems. VII. XMM-Newton Observations of Lensed Quasars
Thomas Connor, Daniel Stern, Alberto Krone-Martins +23
We present XMM-Newton X-ray observations of nine confirmed lensed quasars at identified by the Gaia Gravitational Lens program. Eight systems are strongly…
Constraining the ratio of median pixel optical depth profile around z ~ 4 quasars using the longitudinal proximity effect
Priyanka Jalan, Hum Chand, Raghunathan Srianand
We present a detailed study of the longitudinal proximity effect using a sample of 85 quasars spanning an emission redshift range of and Lyman continuum…
Gaia GraL: Gaia DR2 Gravitational Lens Systems. VI. Spectroscopic Confirmation and Modeling of Quadruply-Imaged Lensed Quasars
D. Stern, S. G. Djorgovski, A. Krone-Martins +23
Combining the exquisite angular resolution of Gaia with optical light curves and WISE photometry, the Gaia Gravitational Lenses group (GraL) uses machine learning techniques to ide…
Gaia GraL: Gaia DR2 Gravitational Lens Systems. V. Doubly-imaged QSOs discovered from entropy and wavelets
A. Krone-Martins, M. J. Graham, D. Stern +22
The discovery of multiply-imaged gravitationally lensed QSOs is fundamental to many astronomical and cosmological studies. However, these objects are rare and challenging to discov…
Probing the environment of high-z quasars using the proximity effect in projected quasar pairs
Priyanka Jalan, Hum Chand, Raghunathan Srianand
We have used spectra of 181 projected quasar pairs at separations arcmins from the Sloan Digital Sky-Survey Data Release 12 in the redshift range of 2.5 to 3.5 to probe t…