Advancements in the IceAct Energy Spectrum Analysis

The IceAct telescopes are Imaging Air Cherenkov telescopes installed as part of the IceCube
Neutrino Observatory at the geographic South Pole. They consist of a 61 pixel camera and are
small and robust to withstand the harsh environmental conditions. IceAct detects Cherenkov light
produced by cosmic-ray particles with energies above approximately 10 TeV interacting inside
the atmosphere, which is complementary to the measurement of the air shower at the surface by
IceTop and the high-energy muons in the deep ice. Two telescopes have been taking data since
2019 with a conservative estimated duty cycle of around 10%. A graph neural network is used to
reconstruct the basic air shower properties, like geometry and primary energy. This work focuses
on the current progress in analyzing the energy spectrum of cosmic rays using IceAct data.