A Gravitationally Lensed Quasar at the Epoch of Reionization

Fan, Xiaohui; Wang, Feige; Yang, Jinyi; Keeton, Charles; Yue, Minghao; Zabludoff, Ann; Bian, Fuyan; Bonaglia, Mario; Georgiev, Iskren; Hennawi, Joseph; Li, Jiangtao; McGreer, Ian; Naidu, Rohan; Pacucci, Fabio; Rabien, Sebastian; Thompson, David; Venemans, Bram; Walter, Fabian; Wu, Xue-Bing; wang, ran

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A Gravitationally Lensed Quasar at the Epoch of Reionization

MPS-Authors

Fan, Xiaohui
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Wang, Feige
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Yang, Jinyi
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Keeton, Charles
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Yue, Minghao
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Zabludoff, Ann
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Bian, Fuyan
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Bonaglia, Mario
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Georgiev, Iskren
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Hennawi, Joseph
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Li, Jiangtao
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

McGreer, Ian
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Naidu, Rohan
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Pacucci, Fabio
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Rabien, Sebastian
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Thompson, David
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Venemans, Bram
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Walter, Fabian
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Wu, Xue-Bing
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

wang, ran
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

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https://ui.adsabs.harvard.edu/abs/2019AAS...23343106F
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Citation

Fan, X., Wang, F., Yang, J., Keeton, C., Yue, M., Zabludoff, A., et al. (2019). A Gravitationally Lensed Quasar at the Epoch of Reionization. In American Astronomical Society Meeting Abstracts #233.

Cite as: https://hdl.handle.net/21.11116/0000-0005-D13A-E

Abstract

A high fraction of the most luminous high-redshift quasars was predicted to be lensed due to magnification bias. We report the discovery of a strongly lensed ultraluminous quasar at z = 6.51, the first such object detected at the epoch of reionization and the brightest quasar yet known at z > 5. High-resolution HST imaging reveals a multiple imaged system with a maximum image separation 0.2", best explained by a model of three quasar images lensed by a low luminosity galaxy at z~0.7, with a magnification factor of ~50. This discovery suggests that a significant population of strongly lensed, high redshift quasars could have been missed by previous surveys, as standard color selection fails when the quasar color is contaminated by the lensing galaxy flux.