Search for neutrino doublets and triplets using 11.4 years of IceCube data - INSPIRE

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Search for neutrino doublets and triplets using 11.4 years of IceCube data

IceCube

Collaboration

Jan 15, 2025

13 pages

e-Print:

2501.09276 [astro-ph.HE]

Experiments:

ICECUBE

View in:

ADS Abstract Service

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Abstract: (arXiv)

We report a search for high-energy astrophysical neutrino multiplets, detections of multiple neutrino clusters in the same direction within 30 days, based on an analysis of 11.4 years of IceCube data. A new search method optimized for transient neutrino emission with a monthly time scale is employed, providing a higher sensitivity to neutrino fluxes. This result is sensitive to neutrino transient emission, reaching per-flavor flux of approximately

10^{-10}\ {\rm erg}\ {\rm cm}^{-2}\ {\rm sec}^{-1}

from the Northern sky in the energy range

E\gtrsim 50

~TeV. The number of doublets and triplets identified in this search is compatible with the atmospheric background hypothesis, which leads us to set limits on the nature of neutrino transient sources with emission timescales of one month.

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