activity
20092026
most citedA refined mass distribution of the cluster MACS J0416.12403 from a new large set of spectroscopic multiply lensed sources

129 citations · 850 across the 46 of their papers we have counts for

collaborators

49 papers

astro-ph.CO2026

Narrowing down the Hubble constant value by exploiting the extended surface brightness of the supernova Refsdal host galaxy

S. Schuldt, C. Grillo, S. H. Suyu +7

We present the first inference of the Hubble constant and matter density parameter from a strongly lensed supernova by exploiting the mass model of a galaxy cluster enhanced by an…

astro-ph.GA2026

DREAMS: Taking the Temperature of a Massive Galaxy at z ~ 11

L. Parente, E. Vanzella, M. Messa +15

We present a detailed photometric and spectroscopic analysis of Janus-11, a galaxy magnified by a factor 1.6 by the galaxy cluster MACS J0416. It was observ…

astro-ph.CO2026

Observation-driven simulations of strong lensing galaxy clusters

L. Leuzzi, M. Meneghetti, A. Adam +9

Galaxy clusters are the most powerful strong lenses: they greatly magnify the flux of distant and faint sources. Strong lensing also allows for the reconstruction of their mass dis…

astro-ph.CO2026

A new measurement with SNe Requiem and Encore using

L. Bazzanini, G. Di Rosa, A. Acebron +24

We present a strong-lensing (SL) analysis of the galaxy cluster MACS J0138.0-2155 (z=0.336), the first known lens cluster discovered to host two distinct multiply imaged Type Ia su…

astro-ph.GA2026

Dynamical models of cluster members to probe the total mass properties of cluster subhalos. I. A comparison with parametric strong lensing models

Nicola Bianchetti, Claudio Grillo, Giovanni Granata +6

In this series of papers, we present dynamical models of cluster members in strong lensing (SL) galaxy clusters to independently probe the persistent discrepancy reported between S…

astro-ph.GA2026

A Cosmic Archipelago of lensed metal-poor galaxies at

A. Bolamperti, M. Messa, A. Zanella +21

The Cosmic Archipelago is an ensemble of galaxies, strongly lensed by the cluster MACSJ0416, showing extreme physical properties at . We combine JWST/NIRCam with deep VL…

astro-ph.GA2026

A New Perspective on Galactic Evolution: Studying the Outskirts of the Abell S1063 Galaxy Cluster

L. Pecoraro, A. Mercurio, M. Annunziatella +14

Galaxy physical properties are influenced by their environments, but the processes responsible for mass and environmental quenching and structural transformations remain debated. G…

astro-ph.GA2026★ 1 cited

The velocity dispersion function of red galaxies in four Hubble Frontier Fields galaxy clusters

G. Granata, L. Tortorelli, C. Grillo +6

We present a detailed study of the stellar kinematic properties of red member galaxies in the cores of four strong lensing galaxy clusters at intermediate redshifts included in the…

astro-ph.CO2026

A boost in the precision of cluster-mass models: Exploiting the extended surface brightness of the lensed supernova Refsdal host galaxy

S. Schuldt, C. Grillo, A. Acebron +4

Combining deep Hubble Space Telescope (HST) images and extensive data from the Multi-Unit Spectroscopic Explorer, we present new mass models of the cluster MACS J1149.5+2223, stron…

astro-ph.GA2025★ 1 cited

A faint M Lyman-continuum leaker candidate in the epoch of reionization: Unprecedented Ly properties at z=5.725

M. Messa, E. Vanzella, T. Morishita +10

We report the unprecedented Ly properties of AMORE6, an extremely metal-poor (), low-mass (), and ultracompact (effec…

astro-ph.GA2025

Image simulations of highly magnified clumpy galaxies

Irene Mini, Massimo Meneghetti, Matteo Messa +5

We present ClumPyLen, a Python-based simulator designed to produce realistic mock observations of strongly lensed, high-redshift, clumpy star-forming galaxies. The tool models gala…

astro-ph.CO2025

Cosmic chronometers with galaxy clusters: a new avenue for multi-probe cosmology

E. Tomasetti, M. Moresco, G. Granata +9

We provide a new measurement of the expansion history of the Universe at with the cosmic chronometers (CC) method, exploiting the high-quality spectroscopic VLT/MUSE data…

astro-ph.CO2025★ 1 cited

Euclid Quick Data Release (Q1). Searching for giant gravitational arcs in galaxy clusters with mask region-based convolutional neural networks

Euclid Collaboration, L. Bazzanini, G. Angora +306

Strong gravitational lensing (SL) by galaxy clusters is a powerful probe of their inner mass distribution and a key test bed for cosmological models. However, the detection of SL e…

astro-ph.CO2025★ 1 cited

Parametric strong lensing model of the galaxy cluster Abell 2390 from Euclid and MUSE observations

D. Abriola, M. Lombardi, C. Grillo +14

We present a new high precision parametric strong lensing total mass reconstruction of the Euclid Early Release Observations (ERO) galaxy cluster Abell 2390, at redshift z = 0.231.…

astro-ph.CO2025★ 3 cited

Cosmology with supernova Encore in the strong lensing cluster MACS J0138-2155: Time delays & Hubble constant measurement

J. D. R. Pierel, E. E. Hayes, M. Millon +26

Multiply-imaged supernovae (SNe) provide a novel means of constraining the Hubble constant (). Such measurements require a combination of precise models of the lensing mass di…

astro-ph.CO2025★ 12 cited

Cosmology with supernova Encore in the strong lensing cluster MACS J0138-2155: Lens model comparison and H0 measurement

S. H. Suyu, A. Acebron, C. Grillo +28

MACS J0138-2155 is the only known cluster to strongly lens two supernovae (SNe), Requiem and Encore, from the same host galaxy at z=1.949. We present seven independent mass models…

astro-ph.GA2025★ 11 cited

A Pristine Star-Forming Complex at z=4.19

E. Vanzella, M. Messa, A. Zanella +14

We report the discovery of a faint (M_1700 ~ -12.2), oxygen-deficient strongly-lensed ionizing source -- dubbed LAP2 (Lensed And Pristine 2) -- at a spectroscopic redshift of z=4.1…

astro-ph.CO2025

Euclid preparation. XCI. Validation method for the detections in the Euclid Catalogue of Galaxy Clusters using external data

Euclid Collaboration, J. -B. Melin, S. A. Stanford +315

We present our methodology for identifying known clusters as counterparts to objects in the Euclid Catalogue of Galaxy Clusters (ECGC). Euclid is expected to detect a large number…

astro-ph.CO2025

Euclid preparation. LXXIV. Euclidised observations of Hubble Frontier Fields and CLASH galaxy clusters

Euclid Collaboration, P. Bergamini, M. Meneghetti +263

We present HST2EUCLID, a novel Python code to generate Euclid realistic mock images in the , , , and photometric bands based on panchro…

astro-ph.CO2025★ 3 cited

CLASH-VLT: The variance in the velocity anisotropy profiles of galaxy clusters

A. Biviano, E. A. Maraboli, L. Pizzuti +9

The velocity anisotropy profiles, , of galaxy clusters are directly related to the shape of the orbits of their member galaxies. Knowledge of is important to understan…

astro-ph.CO2025

Euclid: Early Release Observations. Weak gravitational lensing analysis of Abell 2390

T. Schrabback, G. Congedo, R. Gavazzi +196

The Euclid space telescope of the European Space Agency (ESA) is designed to provide sensitive and accurate measurements of weak gravitational lensing distortions over wide areas o…

astro-ph.GA2025★ 9 cited

JWST spectroscopic confirmation of the Cosmic Gems arc at z=9.625 -- Insights into the small scale structure of a post-burst system

M. Messa, E. Vanzella, F. Loiacono +30

We present JWST/NIRSpec integral field spectroscopy of the Cosmic Gems arc, strongly magnified by the galaxy cluster SPT-CL J06155746. Six-hour integration using NIRSpec prism s…

astro-ph.GA2025★ 1 cited

Unraveling the Lyman Continuum Emission of Ion3: Insights from HST multi-band imaging and X-Shooter spectroscopy

U. Meštrić, E. Vanzella, A. Beckett +15

We provide a comprehensive analysis of Ion3, the most distant LyC leaker at , using multi-band HST photometry and X-Shooter spectroscopy. Deep HST F390W imaging probe unco…

astro-ph.GA2025★ 2 cited

A new quasar strongly-lensed candidate by the galaxy cluster WHJ0400-27 with a image-separation

L. Bazzanini, G. Angora, M. Scialpi +14

Time-delay cosmography (TDC) using multiply-lensed quasars (QSOs) by galaxies has recently emerged as an independent and competitive tool to measure the value of the Hubble constan…