Cosmic Ray Anisotropy Using Ten Years of Data Collected With IceTop

In this study, we present an investigation into the large-scale cosmic ray anisotropy across four distinct energy tiers: 310 TeV, 1.1 PeV, 2.4 PeV, and 6.6 PeV. Our analysis utilizes data collected by the IceTop air shower array spanning from 2011 to 2021. While prior research conducted during the construction of IceTop has addressed the energy dependence of large-scale anisotropy skymaps, this work aims to provide an updated and more comprehensive distribution of cosmic ray arrival directions in the Southern Hemisphere using IceTop. Our approach involves higher statistical accuracy, refined reconstructions, and an expanded set of energy bins, incorporating advancements in Monte Carlo event simulations. Additionally, we explore factors such as the attenuation of lower-energy events due to snow accumulation, reconcile different reconstruction methods tailored to distinct energy tiers, and employ quality cuts that optimize our statistical analysis. Through these enhancements, our study aims to contribute valuable insights into the cosmic ray anisotropy landscape, shedding light on the intricate dynamics of high-energy phenomena in the Southern Hemisphere.