A radio-quiet AGN as a candidate counterpart to neutrino event IceCube-200615A
McBride F, Schettino N, O'Brien JD, Harwood W, Perot L, Temple G, Solares HA, Corsi A, Coleiro A, Cowen D, Fox DB, Li Y, Murase K, Pellegrino A, Russell TD, Wissel S (2025)
Publication Type: Journal article
Publication year: 2025
Journal
Book Volume: 541
Pages Range: 1613-1627
Journal Issue: 2
Abstract
Follow-up observations of neutrino events have been a promising method for identifying sources of very-high-energy cosmic rays. Neutrinos are unambiguous tracers of hadronic interactions and cosmic rays. On 2020 June 15, IceCube detected a neutrino event with an 82.8 per cent probability of being astrophysical in origin. To identify the astrophysical source of the neutrino, we used X-ray tiling observations to identify potential counterpart sources. We performed additional multiwavelength follow-up with NuSTAR and the VLA in order to construct a broadband spectral energy distribution (SED) of the most likely counterpart. From the SED, we calculate an estimate for the neutrinos we expect to detect from the source. While the source does not have a high predicted neutrino flux, it is still a plausible neutrino emitter. It is important to note that the other bright X-ray candidate sources consistent with the neutrino event are also radio-quiet active galactic nuclei. A statistical analysis shows that 1RXS J093117.6+033146 is the most likely counterpart (87.5 per cent) if the neutrino is cosmic in origin and if it is among X-ray detectable sources. This result adds to previous results suggesting a connection between radio-quiet AGN and IceCube neutrino events.
Involved external institutions
Bowdoin College
United States (USA) (US)
Pennsylvania State University (Penn State)
United States (USA) (US)
Texas Tech University (TTU)
United States (USA) (US)
University of Paris 7 - Denis Diderot / Université Paris VII Denis Diderot
France (FR)
National Institute for Astrophysics / Istituto Nazionale Astrofisica (INAF)
Italy (IT)
United States (USA) (US)
Pennsylvania State University (Penn State)
United States (USA) (US)
Texas Tech University (TTU)
United States (USA) (US)
University of Paris 7 - Denis Diderot / Université Paris VII Denis Diderot
France (FR)
National Institute for Astrophysics / Istituto Nazionale Astrofisica (INAF)
Italy (IT)
How to cite
APA:
McBride, F., Schettino, N., O'Brien, J.D., Harwood, W., Perot, L., Temple, G.,... Wissel, S. (2025). A radio-quiet AGN as a candidate counterpart to neutrino event IceCube-200615A. Monthly Notices of the Royal Astronomical Society, 541(2), 1613-1627. https://doi.org/10.1093/mnras/staf1035
MLA:
McBride, Felicia, et al. "A radio-quiet AGN as a candidate counterpart to neutrino event IceCube-200615A." Monthly Notices of the Royal Astronomical Society 541.2 (2025): 1613-1627.
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