https://doi.org/10.1140/epjc/s10052-022-10486-8
Regular Article - Theoretical Physics
A pure hadronic model description of the observed neutrino emission from the tidal disruption event AT2019dsg
1
Department of Physics, & Center for Astroparticle Physics and Space Science, Bose Institute, EN-80, Sector-5, Bidhan Nagar, 700091, Kolkata, India
2
High Energy and Cosmic Ray Research Center, University of North Bengal, 734013, Siliguri, India
Received:
8
April
2022
Accepted:
28
May
2022
Published online:
9
June
2022
Recently, the IceCube Neutrino Observatory has detected the neutrino event IceCube-170922A from the radio-emitting tidal disruption event (TDE) named AT2019dsg, indicating to be one of the most likely sources of high-energy cosmic rays. So far, the photo-hadronic interaction is considered in the literature to interpret neutrino emission from AT2019dsg. Here, we examine whether the IceCube-170922A along with the broadband electromagnetic emission from the source can also be described by a pure hadronic emission employing the proton blazar inspired (PBI) model, which takes into account the non-relativistic protons that emerge under the charge neutrality situation of the blazar jet and thus offers sufficient target matter for pp interactions with shock-accelerated protons. Our findings show that the PBI model is able to consistently describe the IceCube observations on AT2019dsg and the broadband spectrum of the source without exceeding the observed X-ray and gamma-ray flux upper limits imposed by the XMM-Newton and Fermi-LAT telescopes.
© The Author(s) 2022
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Funded by SCOAP3
