Gaia GraL: Gaia DR2 Gravitational Lens Systems. VII. XMM-Newton Observations of Lensed Quasars

Author:

Connor ThomasORCID,Stern DanielORCID,Krone-Martins AlbertoORCID,Djorgovski S. G.ORCID,Graham Matthew J.ORCID,Walton Dominic J.ORCID,Delchambre LudovicORCID,Ducourant ChristineORCID,Teixeira RamachrisnaORCID,Campion Jean-François Le,den Brok Jakob SebastianORCID,Dobie DougalORCID,Galluccio LaurentORCID,Jalan PriyankaORCID,Klioner Sergei A.ORCID,Klüter JonasORCID,Mahabal Ashish A.ORCID,Negi VibhoreORCID,Nierenberg AnnaORCID,Petit Quentin,Scarano Jr SergioORCID,Slezak Eric,Sluse DominiqueORCID,Spíndola-Duarte CarolinaORCID,Surdej JeanORCID,Wambsganss JoachimORCID

Abstract

Abstract 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.

Publisher

American Astronomical Society

Subject

Space and Planetary Science,Astronomy and Astrophysics

Cited by 2 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Gaia GraL: Gaia DR2 gravitational lens systems – VIII. A radio census of lensed systems;Monthly Notices of the Royal Astronomical Society;2024-01-11

2. X-ray absorption and reprocessing in the z ∼ 2.5 lensed quasar 2MASS J1042+1641;Monthly Notices of the Royal Astronomical Society;2022-09-19

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