Measuring the Astrophysical Galactic Plane Neutrino Flux and Searching for Galactic PeVatrons using the IceCube Multi-Flavor Astrophysical Neutrino Sample

The IceCube Neutrino Observatory has provided new insights into the high-energy
universe, in particular, unveiling neutrinos from the galactic plane. However, galactic neutrino
sources are still unresolved. The recent detection of multi-PeV photons by LHAASO from the
Cygnus region highlights its potential as a galactic neutrino source. Additionally, LHAASO,
HAWC, and HESS have reported over forty galactic gamma-ray sources with energies above
100 TeV. Detecting neutrinos correlated with high-energy gamma-ray sources would provide
compelling evidence of cosmic-ray acceleration in these galactic sources. In this work, we
compile a 12.3-year, full-sky, all-flavor dataset, the IceCube Multi-Flavor Astrophysics Neutrino
sample (ICEMAN). ICEMAN is the combination of three largely independent neutrino samples of
different event morphologies and builds upon the previous work of the DNN-based cascade sample,
Enhanced Starting Track Event Selection, and the Northern Track sample. Recent improvements
in ice modeling and detector calibration are also incorporated into the cascade reconstruction. In
addition to revisiting the galactic plane, we adopt two different analysis methods to search for
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galactic PeVatrons. First, we use a template-based approach to probe the Cygnus Cocoon region.
Second, we use a point source hypothesis to find correlations between IceCube neutrinos and
gamma-ray sources detected at energies greater than 100 TeV.