Xander Byrne

activity

20232026

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astro-ph.GA2026

To be lensed or not to be lensed: on the nature of the alleged high-z lensed quasars J0109-5424 and P170+20

Aurora Mata-Sanchez, Emanuele P. Farina, Anniek J. Gloudemans +17

We present a detailed multi-wavelength analysis of two gravitationally lensed z>6 quasar candidates: J0109-5424 and P170+20. Using JWST/NIRSpec near-infrared data from the Aether s…

astro-ph.GA2024

Quasar Island -- Three new $z \sim 6$ quasars, including a lensed candidate, identified with contrastive learning

Xander Byrne, Romain A. Meyer, Emanuele Paolo Farina +5

Of the hundreds of $z ≳ 6$ quasars discovered to date, only one is known to be gravitationally lensed, despite the high lensing optical depth expected at $z ≳ 6$ . High-reds…

To be lensed or not to be lensed: on the nature of the alleged high-z lensed quasars J0109-5424 and P170+20

Quasar Island -- Three new z∼6 quasars, including a lensed candidate, identified with contrastive learning

Quasar Island -- Three new $z \sim 6$ quasars, including a lensed candidate, identified with contrastive learning