Active Galactic Nuclei XVI: A Sea of Discoveries

Session

S5 - Multi-Messenger: Leveraging variability studies, gravitational waves, and high-energy neutrinos (multi-messenger astronomy) to understand the immediate vicinity of the central engine

17 Jun 2026, 12:00

Sala Conferenze presso Autorità di Sistema Portuale (Brindisi)

172. (Review) Cosmic-Ray Acceleration and Hidden Neutrino Production in Seyfert Galaxies

Enrico Peretti

17/06/2026, 12:00

Talk

60. A VHE gamma-ray perspective of Neutrino emitting Seyfert candidates

Sweta Menon (Istituto Nazionale di Astrofisica (INAF))

17/06/2026, 12:30

Talk

Seyfert galaxies have emerged as the most promising counterparts to TeV neutrino excesses detected by IceCube, with significant associations above the 3σ level. Stacked analyses of X-ray bright AGN further indicate a collective signal at ~3σ, supporting their contribution to the multi-messenger neutrino sky.
The AGN environment provides multiple sites capable of accelerating protons to the...

109. All they know is what they are not: the accretion of neutrino-emitting blazars

Gaia Delucchi (Istituto Nazionale di Astrofisica (INAF))

17/06/2026, 12:45

Talk

Blazars are a class of AGN characterised by relativistic jets pointed towards our LoS. Traditionally, they are classified into two families: BL Lacs (no emission lines suggesting an inefficient accretion flow and faint bluer broad band SEDs) and FSRQs (strong emission lines, radiatively efficient accretion and brighter red SEDs). However, recent studies have highlighted that blazars identified...

119. (Highlight) Extragalactic cosmic rays

Stefano Gabici

17/06/2026, 15:00

Talk

I will briefly review our knowledge on extragalactic cosmic rays. I will then discuss the possibility that these particles are accelerated at AGNi, and discuss the multi-messenger signals that unavoidably accompany particle accelerator in these objects.