Baikal-GVD Astrophysical Neutrino Candidate near the Blazar TXS~0506+056
Aug 25, 2023Citations per year
0 Citations
Abstract: (arXiv)
We report on the observation of a rare neutrino event detected by Baikal-GVD in April 2021. The event GVD210418CA is the highest-energy cascade observed by Baikal-GVD so far from the direction below the horizon. The estimated cascade energy is ~TeV. The evaluated signalness parameter of GVD210418CA is 97.1% using an assumption of the E spectrum of astrophysical neutrinos. The arrival direction of GVD210418CA is near the position of the well-known radio blazar TXS~0506+056, with the angular distance being within a 90% directional uncertainty region of the Baikal-GVD measurement. The event was followed by a radio flare observed by the RATAN-600 radio telescope, further strengthening the case for the neutrino-blazar association.Note:
- 9 pages, 6 figures, Contribution to the 38th International Cosmic Rays Conference (ICRC2023). arXiv admin note: text overlap with arXiv:2210.01650
- energy: cascade
- blazar
- horizon
- AGN
- neutrino: VHE
- neutrino: UHE
- neutrino: energy spectrum
- angular distribution
- TeV
References(20)
Figures(6)
- [1]
- [2]
- [3]
- [4]
- [5]
- [6]
- [7]
- [8]
- [9]
- [9]
- [9]
- [10]
- [11]
- [12]
- [13]
- [14]
- [15]
- [16]
- [17]
- [18]