TY - JOUR
T1 - Gaia GraL: Gaia DR2 Gravitational Lens Systems. VII. XMM-Newton Observations of Lensed Quasars
AU - Connor, Thomas
AU - Stern, Daniel
AU - Krone-Martins, Alberto
AU - Djorgovski, S. G.
AU - Graham, Matthew J.
AU - Walton, Dominic J.
AU - Delchambre, Ludovic
AU - Ducourant, Christine
AU - Teixeira, Ramachrisna
AU - Campion, Jean-François Le
AU - Brok, Jakob Sebastian den
AU - Dobie, Dougal
AU - Galluccio, Laurent
AU - Jalan, Priyanka
AU - Klioner, Sergei A.
AU - Klüter, Jonas
AU - Mahabal, Ashish A.
AU - Negi, Vibhore
AU - Nierenberg, Anna
AU - Petit, Quentin
AU - Jr, Sergio Scarano
AU - Slezak, Eric
AU - Sluse, Dominique
AU - Spíndola-Duarte, Carolina
AU - Surdej, Jean
AU - Wambsganss, Joachim
N1 - © 2022. The Author(s). Published by the American Astronomical Society. This is the accepted manuscript version of an article which has been published in final form at https://doi.org/10.3847/1538-4357/ac4476
PY - 2022/3/3
Y1 - 2022/3/3
N2 - We present XMM-Newton X-ray observations of nine confirmed lensed quasars at 1 ≲ z ≲ 3 identified by the Gaia Gravitational Lens program. Eight systems are strongly detected, with 0.3-8.0 keV fluxes F 0.3-8.0 ≳ 5 ×10-14 erg cm-2 s-1. Modeling the X-ray spectra with an absorbed power law, we derive power-law photon indices and 2-10 keV luminosities for the eight detected quasars. In addition to presenting sample properties for larger quasar population studies and for use in planning for future caustic-crossing events, we also identify three quasars of interest: a quasar that shows evidence of flux variability from previous ROSAT observations, the most closely separated individual lensed sources resolved by XMM-Newton, and one of the X-ray brightest quasars known at z > 3. These sources represent the tip of the discoveries that will be enabled by SRG/eROSITA.
AB - We present XMM-Newton X-ray observations of nine confirmed lensed quasars at 1 ≲ z ≲ 3 identified by the Gaia Gravitational Lens program. Eight systems are strongly detected, with 0.3-8.0 keV fluxes F 0.3-8.0 ≳ 5 ×10-14 erg cm-2 s-1. Modeling the X-ray spectra with an absorbed power law, we derive power-law photon indices and 2-10 keV luminosities for the eight detected quasars. In addition to presenting sample properties for larger quasar population studies and for use in planning for future caustic-crossing events, we also identify three quasars of interest: a quasar that shows evidence of flux variability from previous ROSAT observations, the most closely separated individual lensed sources resolved by XMM-Newton, and one of the X-ray brightest quasars known at z > 3. These sources represent the tip of the discoveries that will be enabled by SRG/eROSITA.
KW - astro-ph.GA
KW - astro-ph.HE
UR - https://www.scopus.com/pages/publications/85126814626
U2 - 10.3847/1538-4357/ac4476
DO - 10.3847/1538-4357/ac4476
M3 - Article
SN - 0004-637X
VL - 927
JO - The Astrophysical Journal
JF - The Astrophysical Journal
IS - 1
M1 - 45
ER -