IceCube: Recent Results on Diffuse Astrophysical Neutrinos

by Dr Vedant Basu (University of Utah)

Monday 20 Apr 2026, 14:30 → 16:30 Asia/Kolkata

AG 66 (TIFR, Mumbai)

The measurement of the diffuse astrophysical neutrino flux provides a unique, high-energy view of the hadronic processes powering the most extreme accelerators in our universe. This presentation focuses on the spectral characterization of this flux, exploring what its energy distribution and flavor composition reveal about the underlying dynamics of cosmic ray sources. We present the most recent spectral results from the IceCube Neutrino Observatory, including measurements of the spectral index and all-flavor normalization. We will discuss the implications of these findings for models of neutrino production and examine how current data constrains the dynamics of cosmic ray accelerators. By refining our understanding of the diffuse spectrum, we move closer to identifying whether these neutrinos originate from a few dominant source classes or a more diverse population of extragalactic objects.