Gaia GraL: Gaia DR2 Gravitational Lens Systems. VII. XMM-Newton Observations of Lensed Quasars
Authors
Campion, Jean-François Le
Petit, Quentin
Slezak, Eric
Publication Date
2022-03-01Journal Title
The Astrophysical Journal
ISSN
0004-637X
Publisher
American Astronomical Society
Volume
927
Issue
1
Language
en
Type
Article
This Version
VoR
Metadata
Show full item recordCitation
Connor, T., Stern, D., Krone-Martins, A., Djorgovski, S., Graham, M. J., Walton, D. J., Delchambre, L., et al. (2022). Gaia GraL: Gaia DR2 Gravitational Lens Systems. VII. XMM-Newton Observations of Lensed Quasars. The Astrophysical Journal, 927 (1) https://doi.org/10.3847/1538-4357/ac4476
Abstract
<jats:title>Abstract</jats:title>
<jats:p>We present XMM-Newton X-ray observations of nine confirmed lensed quasars at 1 ≲ <jats:italic>z</jats:italic> ≲ 3 identified by the Gaia Gravitational Lens program. Eight systems are strongly detected, with 0.3–8.0 keV fluxes <jats:italic>F</jats:italic>
<jats:sub>0.3−8.0</jats:sub> ≳ 5 ×10<jats:sup>−14</jats:sup> erg cm<jats:sup>−2</jats:sup> s<jats:sup>−1</jats:sup>. 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 <jats:italic>z</jats:italic> > 3. These sources represent the tip of the discoveries that will be enabled by SRG/eROSITA.</jats:p>
Keywords
310, Galaxies and Cosmology
Identifiers
apjac4476, ac4476, aas35059
External DOI: https://doi.org/10.3847/1538-4357/ac4476
This record's URL: https://www.repository.cam.ac.uk/handle/1810/334633
Rights
Licence:
http://creativecommons.org/licenses/by/4.0/
Statistics
Total file downloads (since January 2020). For more information on metrics see the
IRUS guide.
Recommended or similar items
The current recommendation prototype on the Apollo Repository will be turned off on 03 February 2023. Although the pilot has been fruitful for both parties, the service provider IKVA is focusing on horizon scanning products and so the recommender service can no longer be supported. We recognise the importance of recommender services in supporting research discovery and are evaluating offerings from other service providers. If you would like to offer feedback on this decision please contact us on: support@repository.cam.ac.uk