143 citations · 2.5k across the 80 of their papers we have counts for
56 papers · 1 filter
X-ray investigation of possible super-Eddington accretion in a radio-loud quasar at
L. Ighina, A. Caccianiga, T. Connor +19
We present radio and X-ray observations of the recently discovered radio-powerful quasar RACS J032021.44352104.1 using uGMRT, ATCA, LBA, and Chandra. The observed radio…
Super-Eddington accretion in protogalactic cores
Tommaso Zana, Pedro R. Capelo, Mairo Boresta +6
The presence of massive black holes (BHs) exceeding already at redshift challenges standard models of BH growth. Super-Eddington (SE) accretion has…
A novel sub-grid model for super-Eddington accretion of spinning black holes in galaxy-scale simulations
Wei-Bo Kao, Pedro R. Capelo, Elia Cenci +3
Super-Eddington accretion has been proposed to explain the existence of black holes (BHs) with masses exceeding a billion solar masses within the first billion years after the Big…
Episodic super-Eddington accretion as a clue to Overmassive Black Holes in the early Universe
Alessandro Trinca, Rosa Valiante, Raffaella Schneider +7
Early JWST observations are providing growing evidence for a ubiquitous population of accreting supermassive black holes (BHs) at high redshift, many of which appear overmassive co…
SIEGE III: The formation of dense stellar clusters in sub-parsec resolution cosmological simulations with individual star feedback
F. Calura, R. Pascale, O. Agertz +10
Star clusters stand at the crossroads between galaxies and single stars. Resolving the formation of star clusters in cosmological simulations represents an ambitious and challengin…
An effective model for the tidal disruption of satellites undergoing minor mergers with axisymmetric primaries
Ludovica Varisco, Massimo Dotti, Matteo Bonetti +2
According to the hierarchical formation paradigm, galaxies form through mergers of smaller entities and massive black holes (MBHs), if lurking at their centers, migrate to the nucl…
The AGORA High-resolution Galaxy Simulations Comparison Project. VI. Similarities and Differences in the Circumgalactic Medium
Clayton Strawn, Santi Roca-Fàbrega, Joel R. Primack +26
We analyze the circumgalactic medium (CGM) for eight commonly-used cosmological codes in the AGORA collaboration. The codes are calibrated to use identical initial conditions, cosm…
Sustained super-Eddington accretion in high-redshift quasars
Alessandro Lupi, Giada Quadri, Marta Volonteri +2
Observations of quasars provide information on the early evolution of the most massive black holes (MBHs) and galaxies. Current observations, able to trace both gas a…
On the connection between AGN radiative feedback and massive black hole spin
Francesco Bollati, Alessandro Lupi, Massimo Dotti +1
We present a novel implementation for active galactic nucleus (AGN) feedback through ultra-fast winds in the code gizmo. Our feedback recipe accounts for the angular dependence of…
Massive Black Holes in Galactic Nuclei
David Izquierdo-Villalba, Alessandro Lupi, John Regan +2
Massive black holes are key inhabitants of the nuclei of galaxies. Moreover, their astrophysical relevance has gained significant traction in recent years, thanks especially to the…
Shaping the unseen: the influence of baryons and environment on low-mass, high-redshift dark matter haloes in the SIEGE simulations
R. Pascale, F. Calura, A. Lupi +7
We use zoom-in, hydrodynamical, cosmological -body simulations tracing the formation of the first stellar clumps from the SImulating the Environments where Globular clusters Eme…
A SPectroscopic survey of biased halos In the Reionization Era (ASPIRE): JWST Reveals a Filamentary Structure around a z=6.61 Quasar
Feige Wang, Jinyi Yang, Joseph F. Hennawi +56
We present the first results from the JWST ASPIRE program (A SPectroscopic survey of biased halos In the Reionization Era). This program represents an imaging and spectroscopic sur…
A SPectroscopic survey of biased halos In the Reionization Era (ASPIRE): A First Look at the Rest-frame Optical Spectra of Quasars Using JWST
Jinyi Yang, Feige Wang, Xiaohui Fan +53
Studies of rest-frame optical emission in quasars at have historically been limited by the wavelengths accessible by ground-based telescopes. The James Webb Space Telescope (…
Dynamical evolution of massive black hole pairs in the presence of spin-dependent radiative feedback
Francesco Bollati, Alessandro Lupi, Massimo Dotti +1
The putative ubiquity of massive black holes (MBH) at the center of galaxies, and the hierarchical progress of structure formation along the cosmic history, together necessarily im…
Detection of stellar light from quasar host galaxies at redshifts above 6
Xuheng Ding, Masafusa Onoue, John D. Silverman +41
The detection of starlight from the host galaxies of quasars during the reionization epoch () has been elusive, even with deep HST observations. The current highest redshift q…
Morphological decomposition of TNG50 galaxies: methodology and catalogue
Tommaso Zana, Alessandro Lupi, Matteo Bonetti +6
We present MORDOR (MORphological DecOmposeR, a new algorithm for structural decomposition of simulated galaxies based on stellar kinematics. The code measures the properties of up…
Sub-parsec resolution cosmological simulations of star-forming clumps at high redshift with feedback of individual stars
F. Calura, A. Lupi, J. Rosdahl +7
We introduce a new set of zoom-in cosmological simulations with sub-pc resolution, intended to model extremely faint, highly magnified star-forming stellar clumps, detected at z=6.…
Maximally informed Bayesian modelling of disc galaxies
Fabio Rigamonti, Massimo Dotti, Stefano Covino +5
Dissecting the underlying structure of galaxies is of main importance in the framework of galaxy formation and evolution theories. While a classical bulge+disc decomposition of dis…
Enhanced star formation in quasar companions
Tommaso Zana, Simona Gallerani, Stefano Carniani +5
Quasars powered by supermassive black holes (MBH, ) at are predicted to reside in cosmic over-dense regions. However, observations so far could not confi…
Disc instability and bar formation: view from the IllustrisTNG simulations
David Izquierdo-Villalba, Silvia Bonoli, Yetli Rosas-Guevara +7
We make use of z = 0 samples of strongly barred and unbarred disc galaxies from the TNG100 and TNG50 cosmological hydrodynamical simulations to assess the performance of the simple…
The evolution of the barred galaxy population in the TNG50 simulation
Yetli Rosas-Guevara, Silvia Bonoli, Massimo Dotti +8
We use the magnetic-hydrodynamical simulation TNG50 to study the evolution of barred massive disc galaxies. Massive spiral galaxies are already present as early as , and bar f…
On the low ortho-to-para H2 ratio in star-forming filaments
Alessandro Lupi, Stefano Bovino, Tommaso Grassi
The formation of stars and planetary systems is a complex phenomenon, which relies on the interplay of multiple physical processes. Nonetheless, it represents a crucial stage for o…
High-redshift quasars and their host galaxies II: multiphase gas and stellar kinematics
Alessandro Lupi, Marta Volonteri, Roberto Decarli +2
Observations of quasars provide information on the early phases of the most massive black holes (MBHs) and galaxies. Current observations at sub-mm wavelengths trace…
The AGORA High-resolution Galaxy Simulations Comparison Project. III: Cosmological zoom-in simulation of a Milky Way-mass halo
Santi Roca-Fàbrega, Ji-hoon Kim, Loic Hausammann +20
We present a suite of high-resolution cosmological zoom-in simulations to of a halo at , obtained using seven contemporary astrophysical simul…