IceCat-1: the IceCube Event Catalog of Alert Tracks

Abstract

We present a catalog of likely astrophysical neutrino track-like events from the IceCube Neutrino Observatory. IceCube began reporting likely astrophysical neutrinos in 2016 and this system was updated in 2019. The catalog presented here includes events that were reported in real-time since 2019, as well as events identified in archival data samples starting from 2011. We report 275 neutrino events from two selection channels as the first entries in the catalog, the IceCube Event Catalog of Alert Tracks, which will see ongoing extensions with additional alerts. The gold and bronze alert channels respectively provide neutrino candidates with 50\% and 30\% probability of being astrophysical, on average assuming an astrophysical neutrino power law energy spectral index of 2.19. For each neutrino alert, we provide the reconstructed energy, direction, false alarm rate, probability of being astrophysical in origin, and likelihood contours describing the spatial uncertainty in the alert's reconstructed location. We also investigate a directional correlation of these neutrino events with gamma-ray and X-ray catalogs including 4FGL, 3HWC, TeVCat and Swift-BAT.

Published in ApJS. Figure 4 and 6 corrected. Online version of the catalog is available on dataverse at https://doi.org/10.7910/DVN/SCRUCD

References in corpus (11)

• Multi-messenger Observations of a Binary Neutron Star Merger
• Observation and Characterization of a Cosmic Muon Neutrino Flux from the Northern Hemisphere using six years of IceCube data
• Time-integrated Neutrino Source Searches with 10 years of IceCube Data
• All-sky search for time-integrated neutrino emission from astrophysical sources with 7 years of IceCube data
• Improved Characterization of the Astrophysical Muon-Neutrino Flux with 9.5 Years of IceCube Data
• Measurement of the atmospheric neutrino energy spectrum from 100 GeV to 400 TeV with IceCube
• Detection of a particle shower at the Glashow resonance with IceCube
• Vetoing atmospheric neutrinos in a high energy neutrino telescope
• Follow-up of astrophysical transients in real time with the IceCube Neutrino Observatory
• Constraints on populations of neutrino sources from searches in the directions of IceCube neutrino alerts
• Carpet-2 search for gamma rays above 100 TeV in coincidence with HAWC and IceCube alerts

Cited by in corpus (33)

• AT2021lwx: Another Neutrino-Coincident Tidal Disruption Event with a Strong Dust Echo?
• The Spectra of IceCube Neutrino (SIN) candidate sources -- V. Modeling and interpretation of multiwavelength and neutrino data
• Searches for neutrinos in the direction of radio-bright blazars with the ANTARES telescope
• Neutrinos from explosive transients at the dawn of multi-messenger astronomy
• Two 100 TeV neutrinos coincident with the Seyfert galaxy NGC 7469
• Association of the IceCube neutrinos with blazars in the CGRaBS sample
• The origin of high-energy astrophysical neutrinos: new results and prospects
• Repeated pattern of $\gamma$-ray flares in the blazar PKS 1502+106 coincident with the IC190730A neutrino event
• Search for Continuous and Transient Neutrino Emission Associated with IceCube's Highest-Energy Tracks: An 11-Year Analysis
• Probing the connection between IceCube neutrinos and MOJAVE AGN
• Probing the Galactic neutrino flux at neutrino energies above 200 TeV with the Baikal Gigaton Volume Detector
• $Fermi$-LAT follow-up observations in seven years of real-time high-energy neutrino alerts
• Hard X-ray emission from blazars associated with high-energy neutrinos
• Probing neutrino production in blazars by millimeter VLBI
• Insights from leptohadronic modelling of the brightest blazar flare
• The Spectra of IceCube Neutrino (SIN) candidate sources -- IV. Spectral energy distributions and multi-wavelength variability
• Cross-correlating IceCube neutrinos with a large set of galaxy samples around redshift z ~ 1
• Multi-messenger connection in high-energy neutrino astronomy
• VERITAS and multiwavelength observations of the Blazar B3 2247+381 in response to an IceCube neutrino alert
• Joint searches by FACT, H.E.S.S., MAGIC and VERITAS for VHE gamma-ray emission associated with neutrinos detected by IceCube
• tilepy: rapid tiling strategies in mid/small FoV observatories
• Very-high-energy gamma-ray detection and long-term multi-wavelength view of the flaring blazar B2 1811+31
• Hillas meets Eddington: The case for blazars as ultra-high-energy neutrino sources
• The dynamics of the parsec-scale jet in the neutrino blazar PKS 0735+178
• Search for neutrino doublets and triplets using 11.4 years of IceCube data
• Flat Spectrum Radio Quasars as high-energy neutrino sources
• Rapid jet ejection from PKS 0215+015 coincident with a high-energy neutrino event
• Neutrinos from extreme astrophysical sources
• Optimizing the hunt for extraterrestrial high-energy neutrino counterparts
• Impact of multi-messenger spectral modelling on blazar-neutrino associations
• Sentinel of the extraordinary: the IceCube alert system for neutrino flares
• Identifying multiplets of IceCube alert events
• Deeper analysis of Fermi-LAT unassociated 4FGL J2112.5-3043 for possible identification