Search for sub-TeV neutrino emission from transient sources with three years of IceCube data

IceCube Collaboration, Krijn De Vries, Paul Coppin, Pablo Correa Camiroaga, Catherine De Clercq, Gwenhaël Laure De Wasseige, Nicolaas Van Eijndhoven

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4 Citations (Scopus)
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Since the discovery of a flux of high-energy astrophysical neutrinos, searches for their origins have focused primarily at TeV-PeV energies. Compared to sub-TeV searches, high-energy searches benefit from an increase in the neutrino cross section, improved angular resolution on the neutrino direction, and a reduced background from atmospheric neutrinos and muons. However, the focus on high energy does not preclude the existence of sub-TeV neutrino emission where IceCube retains sensitivity. Here we present the first all-flavor search from IceCube for transient emission of low-energy neutrinos, between 1-100 GeV using three years of data obtained with the IceCube-DeepCore detector. We find no evidence of transient neutrino emission in the data, thus leading to a constraint on the volumetric rate of astrophysical transient sources in the range of $\sim 705-2301\, \text{Gpc}^{-3}\, \text{yr}^{-1}$ for sources following a subphotospheric energy spectrum with a mean energy of 100 GeV and a bolometric energy of $10^{52}$ erg.
Original languageEnglish
Article number027
Number of pages19
JournalJournal of Cosmology and Astroparticle Physics
Issue number1
Publication statusPublished - 18 Jan 2022

Bibliographical note

14 pages, 8 figures


  • astro-ph.HE


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