activity
20222026
most citedHYPerluminous quasars at the Epoch of ReionizatION (HYPERION). A new regime for the X-ray nuclear properties of the first quasars

42 citations · 109 across the 7 of their papers we have counts for

collaborators

8 papers

cs.LG2026

Distilling Graph Geometry: Knowledge Gap from GNNs to MLPs

Zhewei Chen, Hao Zhu, Jiaojiao Jiang +1

GNN-to-MLP distillation aims to retain the predictive accuracy of a message-passing teacher while deploying a graph-free MLP at inference. Existing methods mainly transfer node-wis…

astro-ph.GA2024★ 6 cited

HYPERION: broad-band X-ray-to-near-infrared emission of Quasars in the first billion years of the Universe

I. Saccheo, A. Bongiorno, E. Piconcelli +41

We aim at characterizing the X-ray-to-optical/near-infrared broad-band emission of luminous QSOs in the first Gyr of cosmic evolution to understand whether they exhibit differences…

astro-ph.GA2024★ 6 cited

HYPERION. Shedding light on the first luminous quasars: A correlation between UV disc winds and X-ray continuum

A. Tortosa, L. Zappacosta, E. Piconcelli +41

One of the main open questions in the field of luminous () quasars (QSOs) at is the rapid formation (Gyr) of their superm…

astro-ph.HE2024★ 18 cited

A second view on the X-ray polarization of NGC 4151 with IXPE

V. E. Gianolli, S. Bianchi, E. Kammoun +21

We report on the second observing program of the active galactic nucleus NGC 4151 with simultaneous Imaging X-ray Polarimetry Explorer (IXPE; {\sim}750 ks), NuSTAR ({\sim}60 ks), X…

astro-ph.GA2023★ 42 cited

HYPerluminous quasars at the Epoch of ReionizatION (HYPERION). A new regime for the X-ray nuclear properties of the first quasars

L. Zappacosta, E. Piconcelli, F. Fiore +40

The existence of luminous quasars (QSO) at the Epoch of Reionization (EoR; i.e. z>6) powered by supermassive black holes (SMBH) with masses challenges models…

astro-ph.HE2023

Tracking the spectral properties across the different epochs in ESO 511-G030

R. Middei, P. -O. Petrucci, S. Bianchi +14

The Type I active galactic nucleus (AGN) ESO 511-G030, a formerly bright and soft-excess dominated source, has been observed in 2019 in the context of a multi-wavelength monitoring…

astro-ph.HE2022

Accretion physics at high X-ray spectral resolution: New frontiers and game-changing science

P. Gandhi, T. Kawamuro, M. Díaz Trigo +14

Microcalorimeters have demonstrated success in delivering high spectral resolution, and have paved the path to revolutionary new science possibilities in the coming decade of X-ray…

astro-ph.HE2022★ 37 cited

Localised thermonuclear bursts from accreting magnetic white dwarfs

S. Scaringi, P. J. Groot, C. Knigge +16

Nova explosions are caused by global thermonuclear runaways triggered in the surface layers of accreting white dwarfs. It has been predicted that localised thermonuclear bursts on…