Magnetar-powered neutrinos and magnetic moment signatures at IceCube

Brdar, Vedran; Cheng, Ting; Kuan, Hao-Jui; Li, Ying-Ying

doi:10.1088/1475-7516/2024/07/026

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Magnetar-powered neutrinos and magnetic moment signatures at IceCube

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Cheng, Ting
Division Prof. Dr. Manfred Lindner, MPI for Nuclear Physics, Max Planck Society;

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Citation

Brdar, V., Cheng, T., Kuan, H.-J., & Li, Y.-Y. (2024). Magnetar-powered neutrinos and magnetic moment signatures at IceCube. Journal of Cosmology and Astroparticle Physics, 2024(7): 26. doi:10.1088/1475-7516/2024/07/026.

Cite as: https://hdl.handle.net/21.11116/0000-000F-A2F5-5

Abstract

The IceCube collaboration pioneered the detection of Script O(PeV) neutrino events and the identification of astrophysical sources of high-energy neutrinos. In this study, we explore scenarios in which high-energy neutrinos are produced in the vicinity of astrophysical objects with strong magnetic field, such as magnetars. While propagating through such magnetic field, neutrinos experience spin precession induced by their magnetic moments, and this impacts their helicity and flavor composition at Earth. Considering both flavor composition of high-energy neutrinos and Glashow resonance events we find that detectable signatures may arise at neutrino telescopes, such as IceCube, for presently unconstrained neutrino magnetic moments in the range between Script O(10^-15)_μB and Script O(10^-12)_μB.