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Article dans une revue Monthly Notices of the Royal Astronomical Society Année : 2020

Multimessenger observations of counterparts to IceCube-190331A

Felicia Krauss
  • Fonction : Auteur
Emily Calamari
  • Fonction : Auteur
Azadeh Keivani
  • Fonction : Auteur
Phil A. Evans
  • Fonction : Auteur
Derek B. Fox
  • Fonction : Auteur
Jamie A. Kennea
  • Fonction : Auteur
Peter Mészáros
  • Fonction : Auteur
Kohta Murase
  • Fonction : Auteur
Thomas D. Russell
  • Fonction : Auteur
Marcos Santander
  • Fonction : Auteur
Aaron Tohuvavohu
  • Fonction : Auteur

Résumé

High-energy neutrinos are a promising tool for identifying astrophysical sources of high and ultra-high energy cosmic rays (UHECRs). Prospects of detecting neutrinos at high energies (≳TeV) from blazars have been boosted after the recent association of IceCube-170922A and TXS 0506+056. We investigate the high-energy neutrino, IceCube-190331A, a high-energy starting event (HESE) with a high likelihood of being astrophysical in origin. We initiated a Swift/XRT and UVOT tiling mosaic of the neutrino localization and followed up with ATCA radio observations, compiling a multiwavelength spectral energy distribution (SED) for the most likely source of origin. NuSTAR observations of the neutrino location and a nearby X-ray source were also performed. We find two promising counterpart in the 90 per cent confidence localization region and identify the brightest as the most likely counterpart. However, no Fermi/LAT γ-ray source and no prompt Swift/BAT source is consistent with the neutrino event. At this point, it is unclear whether any of the counterparts produced IceCube-190331A. We note that the Helix Nebula is also consistent with the position of the neutrino event and we calculate that associated particle acceleration processes cannot produce the required energies to generate a high-energy HESE neutrino.
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Dates et versions

hal-02914459, version 1 (11-08-2020)

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Felicia Krauss, Emily Calamari, Azadeh Keivani, Alexis Coleiro, Phil A. Evans, et al.. Multimessenger observations of counterparts to IceCube-190331A. Monthly Notices of the Royal Astronomical Society, 2020, 497 (3), pp.2553-2561. ⟨10.1093/mnras/staa2148⟩. ⟨hal-02914459⟩
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