activity
20242026
most citedA quasar-galaxy merger at : rapid host growth via accretion of two massive satellite galaxies

26 citations · 42 across the 11 of their papers we have counts for

collaborators

12 papers

astro-ph.GA2026

Extreme Enrichment at Cosmic Dawn: Three FeII-Strong Quasars at z > 6 from the JWST Aether survey

Anniek J. Gloudemans, Emanuele Paolo Farina, Roberto Decarli +22

We present three outliers on the quasar main sequence at z>6, as revealed by JWST/NIRSpec IFU observations from the Aether survey, a program targeting ~200 quasars at cosmic dawn.…

astro-ph.GA2026★ 1 cited

Euclid: Discovery of 31 new quasars at

D. Yang, J. F. Hennawi, F. Guarneri +211

We report the discovery of 31 new high- quasars in the redshift range . These quasars were selected from approximately 3000 deg of sky covered during the firs…

astro-ph.GA2026

Euclid: A UV-faint quasar in a highly luminous star-forming host galaxy at

S. Belladitta, R. Decarli, E. Bañados +180

Constraining the co-evolution of supermassive black holes and their host galaxies in the first billion years after the Big Bang is essential for understanding the formation of the…

astro-ph.GA2026

Discovery of Quasar Variability and Early Accretion Disk Signatures at Cosmic Dawn

Gene C. K. Leung, Anna-Christina Eilers, Christos Panagiotou +12

In the nearby universe, quasars are well known to exhibit variability in their brightness over time, offering a powerful tool to probe the physics of accretion onto the SMBH and di…

astro-ph.GA2026★ 1 cited

16 new quasars at the end of the reionization unveiled by self-supervised learning

L. N. Martínez-Ramírez, Julien Wolf, Silvia Belladitta +8

Luminous quasars at are key probes of early supermassive black hole (SMBH) growth, massive galaxy evolution, and intergalactic medium properties during cosmic reionization.…

astro-ph.GA2026★ 3 cited

Shedding the envelope: JWST reveals a kiloparsec-scale [OIII]-weak Balmer shell around a z=7.64 quasar

Julien Wolf, Eduardo Bañados, Xiaohui Fan +25

Luminous quasars at the redshift frontier z>7 serve as stringent probes of super-massive black hole formation and they are thought to undergo much of their growth obscured by dense…

astro-ph.GA2025

Discovery of an X-ray Luminous Radio-Loud Quasar at : A Possible Transitional Super-Eddington Phase

Sakiko Obuchi, Kohei Ichikawa, Satoshi Yamada +11

We report the multiwavelength properties of eFEDS J084222.9+001000 (hereafter ID830), a quasar at , identified as the most X-ray luminous radio-loud quasar in the eROSITA…

astro-ph.GA2025★ 2 cited

Extreme Galaxy-scale Outflows Are Frequent among Luminous Early Quasars

Weizhe Liu, Xiaohui Fan, Huan Li +23

The existence of abundant post-starburst/quiescent galaxies just 1-2 Gyrs after the Big Bang challenges our current paradigm of galaxy evolution. Cosmological simulations sug…

astro-ph.GA2025★ 9 cited

Discovery and characterization of 25 new quasars at 4.6 < z < 6.9 from wide-field multi-band surveys

Silvia Belladitta, Eduardo Bañados, Zhang-Liang Xie +18

Luminous quasars at provide key insights into the early Universe. Their rarity necessitates wide-field multi-band surveys to efficiently separate them from the main astrophys…

astro-ph.GA2025

Lyman-Break Galaxies in the Mpc-Scale Environments Around Three Quasars With JWST Imaging

Maria Pudoka, Feige Wang, Xiaohui Fan +16

We study the Mpc-scale environments of the three highest redshift luminous quasars at (J031343.84-180636.40, J134208.11+092838.61, and J100758.27+211529.21) to understa…

astro-ph.GA2024

Fast Outflow in the Host Galaxy of the Luminous z 7.5 Quasar J10072115

Weizhe Liu, Xiaohui Fan, Jinyi Yang +24

James Webb Space Telescope opens a new window to directly probe luminous quasars powered by billion solar mass black holes in the epoch of reionization and their co-evolution with…

astro-ph.GA2024★ 26 cited

A quasar-galaxy merger at : rapid host growth via accretion of two massive satellite galaxies

Roberto Decarli, Federica Loiacono, Emanuele Paolo Farina +38

We present JWST/NIRSpec Integral Field Spectroscopy in the rest-frame optical bands of the system PJ308-21, a quasar at caught as its host galaxy interacts with companio…