activity
20202026
most citedThe destruction and recreation of the X-ray corona in a changing-look Active Galactic Nucleus

165 citations · 417 across the 10 of their papers we have counts for

collaborators

12 papers

astro-ph.EP2026

A first look at the protoplanet WISPIT 2 b with VLTI/GRAVITY+

GRAVITY+ Collaboration, K. Abd El Dayem, R. Abuter +116

Confirmed observations of young protoplanets actively undergoing the process of formation have remained rare to date. In this Letter, we present new insights into the nature of the…

astro-ph.GA2026

Searching for Nearby Supermassive Black Hole Binaries with GRAVITY

GRAVITY Collaboration, K. Abd El Dayem, N. Aimar +82

We present a systematic interferometric search for close supermassive black hole (SMBH) binaries in 20 nearby type 1 active galactic nuclei (AGN) observed with VLTI/\grav. We inves…

astro-ph.GA2026★ 2 cited

The X-ray weakness of Little Red Dots and JWST-selected AGN: comparison with local AGN in different accretion regimes

A. Tortosa, C. Ricci, P. Du +5

We investigate the origin of the observed X-ray weakness in high z LRDs and other JWST-selected broad line AGN by comparing their X-ray and optical properties with those of a diver…

astro-ph.GA2025★ 2 cited

INSPIRE: INvestigating Stellar Populations In RElics. IX. KiDS J0842+0059: the first fully confirmed relic beyond the local Universe

C. Tortora, G. Tozzi, G. Agapito +20

Relics are massive, compact and quiescent galaxies that assembled the majority of their stars in the early Universe and lived untouched until today, completely missing any subseque…

astro-ph.CO2025★ 1 cited

Euclid Quick Data Release (Q1). LEMON -- Lens Modelling with Neural networks. Automated and fast modelling of Euclid gravitational lenses with a singular isothermal ellipsoid mass profile

Euclid Collaboration, V. Busillo, C. Tortora +312

The Euclid mission aims to survey around 14000 deg^{2} of extragalactic sky, providing around 10^{5} gravitational lens images. Modelling of gravitational lenses is fundamental to…

astro-ph.GA2021★ 26 cited

GAlaxy Light profile convolutional neural NETworks (GaLNets). I. fast and accurate structural parameters for billion galaxy samples

R. Li, N. R. Napolitano, N. Roy +5

Next generation large sky surveys will observe up to billions of galaxies for which basic structural parameters are needed to study their evolution. This is a challenging task that…

astro-ph.GA2021★ 59 cited

High-quality strong lens candidates in the final Kilo Degree survey footprint

R. Li, N. R. Napolitano, C. Spiniello +16

We present 97 new high-quality strong lensing candidates found in the final , that completed the full area of the Kilo-Degree Survey (Ki…

astro-ph.GA2021★ 12 cited

The Fornax Cluster VLT Spectroscopic Survey IV -- Cold kinematical substructures in the Fornax core from COSTA

N. R. Napolitano, M. Gatto, C. Spiniello +15

The COld STream finder Algorithm (COSTA) is a novel algorithm to find streams in the phase space of planetary nebulae (PNe) and globular cluster (GCs) populations. COSTA isolates g…

astro-ph.HE2021★ 63 cited

The 450 days X-ray monitoring of the changing-look AGN 1ES 1927+654

C. Ricci, M. Loewenstein, E. Kara +16

1ES 1927+654 is a nearby active galactic nucleus (AGN) which underwent a changing-look event in early 2018, developing prominent broad Balmer lines which were absent in previous ob…

astro-ph.GA2020★ 10 cited

Discovery of two Einstein crosses from massive post--blue nugget galaxies at z>1 in KiDS

N. R. Napolitano, R. Li, C. Spiniello +18

We report the discovery of two Einstein Crosses (ECs) in the footprint of the Kilo-Degree Survey (KiDS): KIDS J232940-340922 and KIDS J122456+005048. Using integral field spectrosc…

astro-ph.HE2020★ 165 cited

The destruction and recreation of the X-ray corona in a changing-look Active Galactic Nucleus

C. Ricci, E. Kara, M. Loewenstein +16

We present the drastic transformation of the X-ray properties of the active galactic nucleus 1ES 1927+654, following a changing-look event. After the optical/UV outburst the power-…

astro-ph.GA2020★ 77 cited

New high-quality strong lens candidates with deep learning in the Kilo Degree Survey

R. Li, N. R. Napolitano, C. Tortora +11

We report new high-quality galaxy scale strong lens candidates found in the Kilo Degree Survey data release 4 using Machine Learning. We have developed a new Convolutional Neural N…