Measurement of the Diffuse Astrophysical Muon-Neutrino Spectrum with Ten Years of IceCube Data

Joeran Stettner (for the IceCube Collaboration)

Measurement of the Diffuse Astrophysical Muon-Neutrino Spectrum with Ten Years of IceCube Data

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arxiv 1908.09551 v1 pith:2MCSU5NJ submitted 2019-08-26 astro-ph.HE

Measurement of the Diffuse Astrophysical Muon-Neutrino Spectrum with Ten Years of IceCube Data

Joeran Stettner (for the IceCube Collaboration) This is my paper

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The IceCube Neutrino Observatory measured a flux of high-energy astrophysical neutrinos in several detection channels. The energy spectrum is fitted as unbroken power-law, but different best-fit parameters were obtained in the various analyses covering different energy ranges between few TeV to 10 PeV. Here, we present an update to the analysis of through-going muon-neutrinos from the Northern Hemisphere. It was extended to almost ten years of data and an improved treatment of systematic uncertainties on the atmospheric fluxes was implemented. The updated best-fit parameters for the astrophysical flux assuming a power-law energy spectrum are $\Phi_{astro}=1.44$ and $\gamma_{astro}=2.28$. We will present the results of the spectral fit and discuss how the measured flux compares to other IceCube results.

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