activity
20232026
most citedGA-NIFS: Black hole and host galaxy properties of two z6.8 quasars from the NIRSpec IFU

67 citations · 197 across the 13 of their papers we have counts for

collaborators

14 papers

astro-ph.GA2026

GA-NIFS: sRMS, a new method for disentangling resolved and unresolved emission in integral field spectroscopy. Application to distant quasars

Michele Perna, Santiago Arribas, Carlota Prieto-Jiménez +28

The interpretation of AGN emission-line profiles in type1 AGN is often complicated by the dominance of bright, spatially unresolved nuclear continuum and broad-line region (BLR) em…

astro-ph.GA2025★ 2 cited

GA-NIFS: Powerful and frequent outflows in moderate-luminosity active galactic nuclei at

Giacomo Venturi, Stefano Carniani, Elena Bertola +18

The period between z ~ 3-6, a key transformational phase in galaxy evolution preceding 'cosmic noon' (z ~ 1-3), is very poorly explored in terms of feedback from AGN acting through…

astro-ph.GA2025

GA-NIFS: an extended [OIII] halo around the sub-Eddington quasar J1342+0928 at z=7.54

Bartolomeo Trefoloni, Stefano Carniani, Elena Bertola +18

The James Webb Space Telescope (\textit{JWST}) opened a new observational window on the primordial Universe. Here we present new JWST NIRSpec integral field spectroscopy (IFS) obse…

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★ 2 cited

Population III star formation near high-redshift active galactic nuclei

Ethan M. Fisk, Madeline A. Marshall, Phoebe R. Upton Sanderbeck +1

Using cosmological radiation-hydrodynamical simulations, we study the effect of accreting supermassive black holes (SMBHs) on nearby dark-matter (DM) haloes in the very early unive…

astro-ph.GA2025★ 10 cited

GA-NIFS: Mapping AGN-driven ionized outflows in the COSMOS field

E. Bertola, G. Cresci, G. Venturi +17

Active galactic nuclei (AGNi) are a key ingredient in galaxy evolution and possibly shape galaxy growth through the generation of powerful outflows. Little is known regarding AGN-d…

astro-ph.GA2024★ 21 cited

GA-NIFS and EIGER: A merging quasar host at z=7 with an overmassive black hole

Madeline A. Marshall, Minghao Yue, Anna-Christina Eilers +22

The James Webb Space Telescope is revolutionising our ability to understand the host galaxies and local environments of high-z quasars. Here we obtain a comprehensive understanding…

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…

astro-ph.GA2024★ 34 cited

A quasar-galaxy merger at : black hole mass and quasar properties from the NIRSpec spectrum

Federica Loiacono, Roberto Decarli, Marco Mignoli +31

We present JWST/NIRSpec integral field data of the quasar PJ308-21 at . As shown by previous ALMA and HST imaging, the quasar has two companion sources, interacting with…

astro-ph.GA2023

An Estimate of the Impact of Reionization on Supermassive Black Hole Growth

Phoebe R. Upton Sanderbeck, Jarrett L. Johnson, Madeline A. Marshall

The supermassive black holes (SMBHs) that power active galactic nuclei found at were formed during the epoch of reionization. Because reionization is an inhomogeneous proce…

astro-ph.GA2023★ 8 cited

GA-NIFS: JWST discovers an offset AGN 740 million years after the Big Bang

Hannah Übler, Roberto Maiolino, Pablo G. Pérez-González +24

A surprising finding of recent studies is the large number of Active Galactic Nuclei (AGN) associated with moderately massive black holes (), i…

astro-ph.GA2023★ 25 cited

Metal enrichment and evolution in four z > 6.5 quasar sightlines observed with JWST/NIRSpec

L. Christensen, P. Jakobsen, C. Willott +7

We present JWST/NIRSpec R~2700 spectra of four high-redshift quasars: VDES J0020-3653 (z = 6.860), DELS J0411-0907 (z = 6.825), UHS J0439+1634 (z = 6.519) and ULAS J1342+0928 (z =…

astro-ph.GA2023★ 67 cited

GA-NIFS: Black hole and host galaxy properties of two z6.8 quasars from the NIRSpec IFU

Madeline A. Marshall, Michele Perna, Chris J. Willott +20

Integral Field Spectroscopy (IFS) with JWST NIRSpec will significantly improve our understanding of the first quasars, by providing spatially resolved, infrared spectroscopic capab…