First all-flavor search for transient neutrino emission using 3-years of IceCube DeepCore data

Journal article

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, focusing on the energy region of 5.6-100 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 ∼ 705-2301 Gpc-3 yr-1 for sources following a subphotospheric energy spectrum with a mean energy of 100 GeV and a bolometric energy of 1052 erg.

Authors: Abbasi, R; Ackermann, M; Adams, J; Aguilar, JA; Ahlers, M

• Publication status: Published
• Peer review status: Peer reviewed
• Publisher: IOP Publishing
• Journal: Journal of Cosmology and Astroparticle Physics
• Volume: 2022
• Issue: 1
• Pages: 027-027
• Article number: 27
• Publication date: 2022-01-18
• Acceptance date: 2021-12-29
• DOI: 10.1088/1475-7516/2022/01/027
• EISSN: 1475-7516
• Language: English
• Keywords: gamma ray burst experiments; neutrino astronomy; FFR; neutrino experiments