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Abstract

The IceCube Neutrino Observatory has observed a sample of high purity, primarily atmospheric, muon neutrino events over 11 years from all directions below the horizon, spanning the energy range 500 GeV to 100 TeV. This collection of neutrinos passes through the earth and is attenuated to varying degrees depending on the energy and traversed column density of the event. By parameterizing the earth as multiple constant-density shells, we can measure the upgoing neutrino flux as a function of the zenith angle, yielding an inference of the density of each shell. In this talk, I will present the latest sensitivities of this analysis and comparisons with the previous measurement. In addition, I will discuss the analysis procedure, details about the data sample, and systematic effects.