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- W4378509434 abstract "We report the discovery of COOL J0335$-$1927, a quasar at $z$ = 3.27 lensed into three images with a maximum separation of 23.3 by a galaxy cluster at $z$ = 0.4178. We construct a parametric strong gravitational lens model using ground-based imaging, constrained by the redshift and positions of the quasar images as well as the positions of three other multiply-imaged background galaxies. Using our best-fit lens model, we calculate the predicted time delays between the three quasar images to be $Delta$t$_{AB}=$ $241^{+41}_{-12}$ and $Delta$t$_{AC}=$ $-64^{+3}_{-33}$ days. We also present g-band photometry from archival DECaLS imaging, and new multi-epoch observations obtained between September 18, 2022 UT and February 22, 2023 UT, which demonstrate significant variability in the quasar and which will eventually enable a measurement of the time delay between the three quasar images." @default.
- W4378509434 created "2023-05-27" @default.
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- W4378509434 date "2023-05-23" @default.
- W4378509434 modified "2023-10-10" @default.
- W4378509434 title "COOL-LAMPS. V. Discovery of COOL J0335$-$1927, a Gravitationally Lensed Quasar at $z$=3.27 with an Image Separation of 23.3" @default.
- W4378509434 doi "https://doi.org/10.48550/arxiv.2305.14317" @default.
- W4378509434 hasPublicationYear "2023" @default.
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