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The Ice Cube Neutrino Observatory has been measuring an isotropicastrophysical neutrino flux in multiple detection channels for almost a decade.Galactic diffuse emission, which arises from the interactions between cosmicrays and the interstellar medium, is an expected signal in IceCube. Thesuperposition of an extragalactic flux and a galactic flux results indirectional structure and variations in the spectrum. In this work, we use 12.3years of high-purity muon-neutrino induced muon track data to perform adedicated search for this galactic emission, combined with a spectralmeasurement of the isotropic astrophysical neutrino flux. To distinguish agalactic component from the dominant atmospheric and isotropic astrophysicalcomponents, the precise directional information available for muon tracks isfully utilized in a three-dimensional forward folding likelihood fit. We test astate-of-the-art model prediction of galactic diffuse emission based on recentcosmic ray data (CRINGE). We fit this prediction as a template scaled by afactor $\Psi_{\mathrm{CRINGE}}$, and find $2.9\pm 1.1 \times\Psi_{\mathrm{CRINGE}}$ with a significance of $2.7\sigma$ in an energy rangebetween 400 GeV and 60 TeV in the Northern Sky.

Galactic and Extragalactic Analysis of the Astrophysical Muon Neutrino Flux with 12.3 years of IceCube Track Data