99 citations · 342 across the 21 of their papers we have counts for
21 papers · 1 filter
: a close quasar pair at cosmic dawn in the Aether survey
Silvia Onorato, Emanuele Paolo Farina, Roberto Decarli +32
We present the discovery and first characterization of : the most compact known quasar pair candidate in the Epoch of Reionization, with a projected se…
BAQARO: Tracing Stochastic Black Hole Growth Histories and Quasar Lightcurves in a Cosmological Context
Elia Pizzati, Joseph F. Hennawi, Joop Schaye
How supermassive black holes (BHs) assemble their mass and power the luminous quasars we observe across cosmic time remain central open questions in galaxy evolution. We present BA…
Quasar Impostors: Two Extremely UV-Bright () Reionisation-Epoch Galaxies Powered by Very Massive Stars
Daming Yang, Joseph F. Hennawi, Sarah E. I. Bosman +20
The extreme bright end of the galaxy UV luminosity function during reionisation remains poorly constrained, particularly where the galaxy and quasar luminosity functions overlap an…
The Lumina Project: The Demographics of Active Galactic Nuclei from Quasars to Little Red Dots at
Xuejian Shen, Oliver Zier, Aaron Smith +16
High-redshift active galactic nuclei (AGN) serve as powerful probes of early black-hole growth, galaxy formation, and the evolving intergalactic medium (IGM). In this work, we use…
MEOW: The increase in the obscured AGN fraction in mid-infrared from 0 < z < 6 with JWST MIRI
Teodora-Elena Bulichi, Gene C. K. Leung, Anna-Christina Eilers +16
Obscured active galactic nuclei (AGN) are often invoked to explain the rapid emergence of young quasars at high redshift and are crucial for building a complete census of AGN activ…
Clustering of z~6.6 Quasars and [O III] Emitters Constrains Host Halo Masses and Duty Cycles in 25 ASPIRE Fields
Jiamu Huang, Joseph Hennawi, Elia Pizzati +21
We use data from the JWST ASPIRE Wide Field Slitless Spectroscopy (WFSS) program to measure the auto-correlation function of [O,{\sc iii}] emitters at 5.37.0 and the quasar--[…
ASPIRE: The Environments and Dark Matter Halos of Luminous Quasars in the Epoch of Reionization
Feige Wang, Jaclyn B. Champagne, Jiamu Huang +42
We present a systematic study of the environments of 25 luminous quasars at from the ASPIRE program. Using JWST/NIRCam WFSS data, we identified 487 galaxies at $5.3 \less…
The luminosity function and clustering of bright quasars in the FLAMINGO cosmological simulations
Boyi Ding, Elia Pizzati, Joop Schaye +3
Cosmological hydrodynamical simulations are essential tools for studying the formation and evolution of galaxies and their central supermassive black holes. While they reproduce ma…
A first look at quasar-galaxy clustering at
Jan-Torge Schindler, Joseph F. Hennawi, Frederick B. Davies +8
We present JWST observations of the environments surrounding two high-redshift quasars, J02520503 at and J10072115 at , which enable the first constraints…
Homogeneous measurements of proximity zone sizes for 59 quasars in the Epoch of Reionization
Silvia Onorato, Joseph F. Hennawi, Elia Pizzati +2
The overionized regions surrounding high-redshift quasars, known as proximity zones, provide a window into the interaction between supermassive black holes (SMBHs) and the intergal…
A Little Red Dot at within a Large Galaxy Overdensity
Jan-Torge Schindler, Joseph F. Hennawi, Frederick B. Davies +11
The nature of "Little Red Dots" and their relation to other forms of accreting supermassive black holes remain an open question. Here we report the discovery of a Little Red Dot at…
"Little red dots" cannot reside in the same dark matter halos as comparably luminous unobscured quasars
Elia Pizzati, Joseph F. Hennawi, Joop Schaye +4
The James Webb Space Telescope (JWST) has uncovered a new population of candidate broad-line AGN emerging in the early Universe, named ''little red dots'' (LRDs) because of their c…
A SPectroscopic survey of biased halos In the Reionization Era (ASPIRE): Broad-line AGN at revealed by JWST/NIRCam WFSS
Xiaojing Lin, Feige Wang, Xiaohui Fan +33
Low-luminosity AGNs with low-mass black holes (BHs) in the early universe are fundamental to understanding the BH growth and their co-evolution with the host galaxies. Utilizing JW…
A unified model for the clustering of quasars and galaxies at
Elia Pizzati, Joseph F. Hennawi, Joop Schaye +12
Recent observations from the EIGER JWST program have measured for the first time the quasar-galaxy cross-correlation function at . The auto-correlation function of faint…
EIGER VI. The Correlation Function, Host Halo Mass and Duty Cycle of Luminous Quasars at
Anna-Christina Eilers, Ruari Mackenzie, Elia Pizzati +13
We expect luminous () high-redshift quasars to trace the highest density peaks in the early universe. Here, we present observations of four quasa…
Revisiting the Extreme Clustering of Quasars with Large Volume Cosmological Simulations
Elia Pizzati, Joseph F. Hennawi, Joop Schaye +1
Observations from wide-field quasar surveys indicate that the quasar auto-correlation length increases dramatically from to . This large clustering amplitu…
[CII] halos in ALPINE galaxies: smoking-gun of galactic outflows?
E. Pizzati, A. Ferrara, A. Pallottini +3
ALMA observations have revealed that many high redshift galaxies are surrounded by extended (10-15 kpc) [CII]-emitting halos which are not predicted by even the most advanced zoom-…
A new look at the infrared properties of z 5 galaxies
L. Sommovigo, A. Ferrara, S. Carniani +6
Recent ALMA large surveys unveiled the presence of significant dust continuum emission in star-forming galaxies at . Unfortunately, such large programs -- i.e. ALPINE ($z\sim…
The ALMA REBELS Survey: Average [CII] sizes of Star-Forming Galaxies from to
Y. Fudamoto, R. Smit, R. A. A. Bowler +36
We present the average [CII] emission line sizes of UV-bright star-forming galaxies at . Our results are derived from a stacking analysis of [CII] $158\,\rm{…
A survey of high- galaxies: SERRA simulations
A. Pallottini, A. Ferrara, S. Gallerani +10
We introduce SERRA, a suite of zoom-in high-resolution () cosmological simulations including non-equilibrium chemistry and on-the-fly radiative transfer. The outpu…
Outflows and extended [CII] halos in high redshift galaxies
Elia Pizzati, Andrea Ferrara, Andrea Pallottini +4
Recent stacked ALMA observations have revealed that normal, star-forming galaxies at are surrounded by extended () [CII] emitting halos which…