Constraints on the Correlation of IceCube Neutrinos with a Tracer of Nearby Large-scale Structure

IceCube Collaboration; R Abbasi; M. Ackermann; J Adams; S K Agarwalla; J. A Aguilar; M Ahlers; J M Alameddine; S Ali; N. M Amin; M. Hostert

doi:10.3847/1538-4357/ae43df

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Constraints on the Correlation of IceCube Neutrinos with a Tracer of Nearby Large-scale Structure

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Constraints on the Correlation of IceCube Neutrinos with a Tracer of Nearby Large-scale Structure

IceCube Collaboration, R Abbasi, M. Ackermann, J Adams, S K Agarwalla, J. A Aguilar, M Ahlers, J M Alameddine, S Ali, N. M Amin, …

The Astrophysical journal, Vol.1000(1), 124

03/20/2026

DOI: 10.3847/1538-4357/ae43df

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Abstract

The IceCube Neutrino Observatory has observed extragalactic astrophysical neutrinos with an apparently isotropic distribution. Only a small fraction of the observed astrophysical neutrinos can be explained by known sources. Neutrino production is thought to occur in energetic environments that are ultimately powered by the gravitational collapse of dense regions of the large-scale mass distribution in the universe. Whatever their identity, neutrino sources likely trace this large-scale mass distribution. The clustering of neutrinos with a tracer of the large-scale structure may provide insight into the distribution of neutrino sources with respect to redshift and the identity of neutrino sources. We implement a two-point angular cross correlation of the Northern sky track events with an infrared galaxy catalog derived from the Wide-field Infrared Survey Explorer (WISE) and Two Micron All Sky Survey (2MASS) source catalogs, which trace the nearby large-scale structure. No statistically significant correlation is found between the neutrinos and this infrared galaxy catalog. We find that ≤54% of the diffuse muon neutrino flux can be attributed to sources correlated with the galaxy catalog with 90% confidence. Additionally, when assuming that the neutrino source comoving density evolves following a power law in redshift, dN s / dV ∝ (1 + z ) k , we find that sources with negative evolution, in particular k < −1.75, are disfavored at the 90% confidence level.

Details

Title: Subtitle: Constraints on the Correlation of IceCube Neutrinos with a Tracer of Nearby Large-scale Structure
Creators: IceCube Collaboration
R Abbasi (Contributor) - Loyola University Chicago
M. Ackermann (Contributor) - Deutsches Elektronen-Synchrotron DESY
J Adams (Contributor) - University of Canterbury
S K Agarwalla (Contributor) - Institute of Physics, Bhubaneshwar
J. A Aguilar (Contributor) - Université Libre de Bruxelles
M Ahlers (Contributor) - University of Copenhagen
J M Alameddine (Contributor) - TU Dortmund University
S Ali (Contributor) - University of Kansas
N. M Amin (Contributor) - University of Delaware
M. Hostert (Contributor)
Resource Type: Journal article
Publication Details: The Astrophysical journal, Vol.1000(1), 124
DOI: 10.3847/1538-4357/ae43df
ISSN: 0004-637X
eISSN: 1538-4357
Publisher: IOP
Language: English
Date published: 03/20/2026
Academic Unit: Physics and Astronomy
Record Identifier: 9985146132602771

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