Characterization of the Astrophysical Neutrino Flux at the IceCube Neutrino Observatory

14th International Conference on Topics in Astroparticle and Underground Physics

物理学;天文学

Mohrmann, Lars^1

DESY, Platanenallee 6, Zeuthen

D-15738, Germany^1

关键词: Additional datum;    Detection channels;    Energy ranges;    Energy spectra;    Global analysis;    High energy neutrinos;    Multiple search;    Neutrino fluxes;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/718/6/062045/pdf
DOI  :  10.1088/1742-6596/718/6/062045

学科分类：天文学(综合)

来源: IOP

【 摘 要 】

With the discovery of a high-energy astrophysical neutrino flux, the IceCube Neutrino Observatory, located at the geographical South Pole, has opened the field of high-energy neutrino astronomy. While evidence for extraterrestrial neutrinos has been found in multiple searches, it was not yet possible to identify their sources; they appear as an isotropic excess. Nevertheless, it is possible to constrain the properties of the sources by measuring the energy spectrum and the flavor composition of the flux. Here, we present the latest results from a global analysis, combining all available detection channels and energy ranges. We derive the currently most precise constraints on the energy spectrum and flavor composition of the astrophysical neutrino flux. In addition, we show projected constraints on these properties that can be obtained with additional data in the future.