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20242026
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astro-ph.HE2026

The twin-jet system in the FRII radio galaxy 3C 452: A sub-parsec scale VLBI study

Eftychia Madika, Bia Boccardi, Luca Ricci +5

We present a comprehensive multifrequency VLBI analysis of the FRII, high-excitation radio galaxy 3C 452, aiming to resolve and analyze for the first time its twin-jet structure on…

astro-ph.HE2026

The Advanced X-ray Imaging Satellite (AXIS) Community Science Book

Michael Koss, Nafisa Aftab, Steven W. Allen +395

The AXIS Community Science Book represents the collective effort of 592 scientists worldwide to define the transformative science enabled by the Advanced X-ray Imaging Satellite (A…

astro-ph.HE2025

A Song of Lines and Winds: Tracing the Signatures of AGN Outflows in X-rays

M. Laurenti, F. Tombesi, P. Condò +14

Ultra-fast outflows (UFOs) are highly ionized, mildly relativistic winds seen in the X-ray spectra of active galactic nuclei (AGN) and are thought to contribute to AGN feedback and…

astro-ph.HE2025

Peering into the heart of 3CR radio galaxies. A very long baseline interferometry perspective on optical-radio classifications at parsec scales

P. Grandi, G. Giovannini, E. Torresi +1

Historically, luminous edge-brightened Fanaroff-Riley type II (FRII) radio galaxies have been associated with radiatively efficient cold accretion disks. In contrast, faint edge-da…

astro-ph.HE2024

Jet formation studies in AGN: a search for new targets

B. Boccardi, L. Ricci, E. Madika +6

In recent years, the jet formation region in active galaxies has been imaged through mm-VLBI in few ideal targets, first and foremost M87. An important leap forward for understandi…

astro-ph.HE2024

Fermi-LAT detection of the low-luminosity radio galaxy NGC 4278 during the LHAASO campaign

E. Bronzini, P. Grandi, E. Torresi +1

We present a study of the high-energy properties of the compact symmetric object NGC 4278, recently associated with a TeV source by the Large High Altitude Air Shower Observatory (…