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arXiv · 2605.11966

Limit on high energy neutrino emission from Abell 119 using IceCube 10-year muon track data

Sri Devaki Meduri·Shantanu Desai
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Abstract

We carry out a search for high energy muon neutrino emission from the galaxy cluster Abell 119, motivated by a recent detection of GeV gamma rays from this cluster using the Fermi-LAT telescope, which hinted at a hadronic origin. For this purpose, we used the 10-year muon track data from 2008-2018, provided by the IceCube Collaboration and implement the unbinned maximum likelihood emission. We do not find any statistically significant excess and the test statistics is consistent with a null result. We then obtain upper limits (at 95\% confidence level) on the differential muon neutrino energy flux from this cluster, whose value is equal to $2.42 \times 10^{-10}~\mathrm{GeV}~\mathrm{cm}^{-2}~\mathrm{s}^{-1}~\mathrm{sr}^{-1}$ at 100 TeV. This limit is about 1.2 times lower than the predicted neutrino flux required to explain the hadronic origin of the galaxy cluster emission, thus marginally ruling it out. Therefore, additional data from future neutrino detectors should be able to definitively rule out a hadronic origin for the observed gamma-ray emission in Abell 119.

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Sri Devaki Meduri, Shantanu Desai. 2026-05-12. Limit on high energy neutrino emission from Abell 119 using IceCube 10-year muon track data. https://arxiv.org/abs/2605.11966

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