2 papers
astro-ph.HE2025
On the possible contributions of two nearby blazars to the NGC 4151 neutrino hotspot
Anastasiia Omeliukh, Samuel Barnier, Yoshiyuki Inoue
The origin of the high-energy astrophysical neutrinos discovered by IceCube remains unclear, with both blazars and Seyfert galaxies emerging as potential sources. Recently, the Ice…
astro-ph.GA2025
XMM/HST monitoring of the ultra-soft highly accreting Narrow Line Seyfert 1 RBS 1332
R. Middei, S. Barnier, F. G. Saturni +10
Ultra-soft narrow line Seyfert 1 (US-NLSy) are a poorly observed class of active galactic nuclei characterized by significant flux changes and an extreme soft X-ray excess. This pe…