Erlangen 2026 – scientific programme

Parts | Days | Selection | Search | Updates | Downloads | Help

T: Fachverband Teilchenphysik

T 37: Neutrino Astronomy II

T 37.9: Talk

Tuesday, March 17, 2026, 18:15–18:30, KS H C

KM3NeT/ARCA All-Sky Diffuse Analysis using PyForwardFolding — •Anke Mosbrugger and Oliver Janik — Erlangen Centre for Astroparticle Physics (ECAP), Friedrich-Alexander-Universität Erlangen-Nürnberg

KM3NeT/ARCA is a cubic-kilometer water-Cherenkov neutrino detector under construction in the Mediterranean Sea. Its primary goal is to detect high-energy neutrinos from both galactic and extragalactic sources. This talk presents methods to improve the search for the astrophysical neutrino flux using ARCA21, the construction phase with 21 detection lines in operation.

Studies of the astrophysical neutrino flux commonly use a binned, forward-folding likelihood method. Our analysis is carried out with the new open-source tool PyForwardFolding (PyFF). PyFF supports the full analysis chain following event selection, including flux weighting, binning, and handling of systematics. PyFF also enables combined analyses across different detector configurations and between experiments, such as KM3NeT and IceCube. This is especially relevant for searches along the Galactic Plane and for identifying potential Galactic neutrino sources.

Keywords: KM3NeT/ARCA; astrophysical neutrinos; PyForwardFolding; IceCube; Galactic Plane