Search for Astrophysical Neutrinos from 1FLE Blazars with IceCube

Abstract

The majority of astrophysical neutrinos have undetermined origins. The IceCube Neutrino Observatory has observed astrophysical neutrinos but has not yet identified their sources. Blazars are promising source candidates, but previous searches for neutrino emission from populations of blazars detected in $\gtrsim$ GeV gamma-rays have not observed any significant neutrino excess. Recent findings in multi-messenger astronomy indicate that high-energy photons, co-produced with high-energy neutrinos, are likely to be absorbed and reemitted at lower energies. Thus, lower-energy photons may be better indicators of TeV-PeV neutrino production. This paper presents the first time-integrated stacking search for astrophysical neutrino emission from MeV-detected blazars in the first Fermi-LAT low energy catalog (1FLE) using ten years of IceCube muon-neutrino data. The results of this analysis are found to be consistent with a background-only hypothesis. Assuming an E${}^{-2}$ neutrino spectrum and proportionality between the blazars' MeV gamma-ray fluxes and TeV-PeV neutrino flux, the upper limit on the 1FLE blazar energy-scaled neutrino flux is determined to be $1.64\times 10^{-12}$ TeV cm${}^{-2}$ s${}^{-1}$ at 90% confidence level. This upper limit is approximately 1% of IceCube's diffuse muon-neutrino flux measurement.

arXiv comment13 pages, 3 figures, 1 table; to be published in Astrophysical Journal

References in corpus (31)

• Unified Schemes for Radio-Loud Active Galactic Nuclei
• The Large Area Telescope on the Fermi Gamma-ray Space Telescope Mission
• Evidence for High-Energy Extraterrestrial Neutrinos at the IceCube Detector
• Fermi Large Area Telescope Fourth Source Catalog
• A Unifying View of the Spectral Energy Distributions of Blazars
• Multi-messenger observations of a flaring blazar coincident with high-energy neutrino IceCube-170922A
• Neutrino emission from the direction of the blazar TXS 0506+056 prior to the IceCube-170922A alert
• The IceCube Neutrino Observatory: Instrumentation and Online Systems
• Leptonic and Hadronic Modeling of Fermi-Detected Blazars
• The Second Catalog of Active Galactic Nuclei Detected by the Fermi Large Area Telescope
• IceCube-Gen2: The Window to the Extreme Universe
• A combined maximum-likelihood analysis of the high-energy astrophysical neutrino flux measured with IceCube
• Time-integrated Neutrino Source Searches with 10 years of IceCube Data
• 3FHL: The Third Catalog of Hard Fermi-LAT Sources
• Hidden Cosmic-Ray Accelerators as an Origin of TeV-PeV Cosmic Neutrinos
• On the cosmic ray bound for models of extragalactic neutrino production
• All-sky search for time-integrated neutrino emission from astrophysical sources with 7 years of IceCube data
• The contribution of Fermi-2LAC blazars to the diffuse TeV-PeV neutrino flux
• Science with e-ASTROGAM (A space mission for MeV-GeV gamma-ray astrophysics)
• Improved Characterization of the Astrophysical Muon-Neutrino Flux with 9.5 Years of IceCube Data
• Methods for point source analysis in high energy neutrino telescopes
• Lepto-hadronic single-zone models for the electromagnetic and neutrino emission of TXS 0506+056
• Detection of a particle shower at the Glashow resonance with IceCube
• Neutrino Fluxes from Active Galaxies: a Model-Independent Analysis
• The energy spectrum of cosmic rays beyond the turn-down around $10^{17}$ eV as measured with the surface detector of the Pierre Auger Observatory
• On the direct correlation between gamma-rays and PeV neutrinos from blazars
• The Energy Spectrum of Cosmic Rays above 10${}^{17.2}$ eV Measured by the Fluorescence Detectors of the Telescope Array Experiment in Seven Years
• Search for Astrophysical Tau Neutrinos in Three Years of IceCube Data
• IceCube Search for High-Energy Neutrino Emission from TeV Pulsar Wind Nebulae
• The first catalog of Fermi-LAT sources below 100 MeV
• Ultra-high energy cosmic rays deflection by the Intergalactic Magnetic Field

Cited by in corpus (21)

• Correlating high-energy IceCube neutrinos with 5BZCAT blazars and RFC sources
• Constraining High-Energy Neutrino Emission from Supernovae with IceCube
• Dissecting the broadband emission from γ-ray blazar PKS 0735+178 in search of neutrinos
• Investigating the correlations between IceCube high-energy neutrinos and Fermi-LAT gamma-ray observations
• Flare Duty Cycle of Gamma-Ray Blazars and Implications for High-Energy Neutrino Emission
• A Cross-correlation Study between IceCube Neutrino Events and the Fermi Unresolved Gamma-ray Sky
• A stacked search for spatial coincidences between IceCube neutrinos and radio pulsars
• Multi-messenger emission from magnetic reconnection in blazar jets: the case of TXS 0506+056
• Time-integrated constraint on neutrino flux of CHIME fast radio burst sources with 10-year IceCube point-source data
• Deciphering the Sources of Cosmic Neutrinos
• Did IceCube discover Dark Matter around Blazars?
• Cross-correlating IceCube neutrinos with a large set of galaxy samples around redshift z ~ 1
• First Search for High-Energy Neutrino Emission from Galaxy Mergers
• Are There Correlations in the HAWC and IceCube High Energy Skymaps Outside the Galactic Plane?
• Flat Spectrum Radio Quasars as high-energy neutrino sources
• Investigating the correlations between IceCube high-energy neutrinos and Fermi-LAT $\gamma$-ray observations. II
• Search for spatial coincidence between IceCube neutrinos and gamma-ray bright red dwarfs
• Impact of multi-messenger spectral modelling on blazar-neutrino associations
• A Radio-quiet AGN as a candidate counterpart to neutrino event IceCube-200615A
• Neutrino Astronomy at High Energies - An Experimental Review
• Neutrino anisotropy as a probe of extreme astrophysical accelerators