Search for Extended Sources of Neutrino Emission in the Galactic Plane with IceCube - INSPIRE

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Search for Extended Sources of Neutrino Emission in the Galactic Plane with IceCube

IceCube

Collaboration

•

R. Abbasi
(
- Loyola U., Chicago
)

Jul 14, 2023

13 pages

Published in:

Astrophys.J. 956 (2023) 1, 20

Published: Oct 4, 2023

e-Print:

2307.07576 [astro-ph.HE]

DOI:

10.3847/1538-4357/acf713

Experiments:

ICECUBE

View in:

ADS Abstract Service

reference search11 citations

Citations per year

Abstract: (IOP)

The Galactic plane, harboring a diffuse neutrino flux, is a particularly interesting target in which to study potential cosmic-ray acceleration sites. Recent gamma-ray observations by HAWC and LHAASO have presented evidence for multiple Galactic sources that exhibit a spatially extended morphology and have energy spectra continuing beyond 100 TeV. A fraction of such emission could be produced by interactions of accelerated hadronic cosmic rays, resulting in an excess of high-energy neutrinos clustered near these regions. Using 10 years of IceCube data comprising track-like events that originate from charged-current muon neutrino interactions, we perform a dedicated search for extended neutrino sources in the Galaxy. We find no evidence for time-integrated neutrino emission from the potential extended sources studied in the Galactic plane. The most significant location, at 2.6σ post-trials, is a 1.°7 sized region coincident with the unidentified TeV gamma-ray source 3HWC J1951+266. We provide strong constraints on hadronic emission from several regions in the galaxy.

Note:

13 pages, 4 figures, 5 tables including an appendix. Accepted for publication in Astrophysical Journal

neutrino: flux
neutrino: particle source
neutrino: interaction
cosmic radiation: acceleration
galaxy
gamma ray
IceCube
TeV
muon
LHAASO

References(52)

Figures(4)

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)

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•
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)

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)

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