Astronomy with energy dependent flavour ratios of extragalactic neutrinos
Siddhartha Karmakar, Sujata Pandey, Subhendu Rakshit
TL;DR
This paper explores how energy-dependent neutrino flavour ratios caused by interactions with ultralight dark matter can be used to probe dark matter distributions in astrophysical sources through neutrino observations.
Contribution
It introduces a novel method to study dark matter density profiles in astrophysical objects using energy-dependent neutrino flavour ratios.
Findings
Energy dependence in flavour ratios can be detected in neutrino telescopes.
Flavour ratio variations can reveal dark matter density profiles.
Potential to distinguish different dark matter distributions in sources.
Abstract
High energy astrophysical neutrinos interacting with ultralight dark matter (DM) can undergo flavour oscillations that induce an energy dependence in the flavour ratios. Such a dependence on the neutrino energy will reflect in the track to shower ratio in neutrino telescopes like IceCube or KM3NeT. This opens up a possibility to study DM density profiles of astrophysical objects like AGN, GRB etc., which are the suspected sources of such neutrinos.
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