Speaker
Description
Observations by the High-Altitude Water Cherenkov (HAWC) Observatory have revealed gamma-ray emission from the Galactic Center (GC) region extending beyond 100 TeV with an unbroken power law, indicating the presence of a powerful particle accelerator. If this emission is of hadronic origin, a corresponding flux of high-energy neutrinos is expected. We present an update on HAWC analyses of the GC region, incorporating additional data and improved gamma–hadron separation using machine learning techniques, yielding a maximum significance of 8.5$\sigma$. The best-fit model consists of a point-like source and Galactic diffuse emission modeled with HERMES (High-Energy Radiative Messengers). Motivated by this scenario, we construct a corresponding neutrino emission template for the same region of interest, embedding a point-source component while preserving the spectral index and flux ratio measured by HAWC. Using 12 years of IceCube’s point-source dataset, we perform a likelihood analysis based on this spatial template and present results on the normalization of the neutrino flux.
