1. Dissecting the region around IceCube-170922A: the blazar TXS 0506+056 as the first cosmic neutrino source.
- Author
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Glauch, Theo, Padovani, Paolo, Giommi, Paolo, Resconi, Elisa, Arsioli, Bruno, Sahakyan, Narek, Huber, Matthias, and Spiering, C.
- Subjects
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NEUTRINO detectors , *BL Lacertae objects , *NEUTRINOS , *FLUX (Energy) , *NEUTRINO astrophysics - Abstract
On MJD 58018 the IceCube neutrino observatory detected a highlyenergetic, well-reconstructed neutrino, IceCube-170922A, at a distance of 0:1° to a γ-ray flaring blazar, TXS 0506+056. Follow-up searches in archival data additionally revealed a larger flare of neutrinos from the same direction. In order to complete the picture we present here a full multi-wavelength study of the region around IceCube-170922A. While we identify also other non-thermal counterpart candidates, we show that all the evidence points to TXS 0506+056 as the dominant neutrino emitter. Additionally, an analysis of all the available Fermi-LAT data indicates a hard spectrum/low flux of TXS 0506+056 during the neutrino flare in contrast to a soft spectrum/high flux at the arrival time of IceCube-170922A. Putting all the pieces together we conclude that the SED of TXS 0506+056 can be energetically reconnected for both neutrino observations. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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