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@ARTICLE{Fiorillo:630941,
      author       = {Fiorillo, Damiano Francesco Giuseppe and Testagrossa,
                      Federico and Petropoulou, Maria and Winter, Walter},
      title        = {{C}an the neutrinos from {TXS} 0506+056 have a coronal
                      origin?},
      journal      = {The astrophysical journal / Part 1},
      volume       = {986},
      issn         = {0004-637X},
      address      = {London},
      publisher    = {Institute of Physics Publ.},
      reportid     = {PUBDB-2025-01901, arXiv:2502.01738},
      pages        = {104},
      year         = {2025},
      note         = {7 pages, 2 figures, plus appendices},
      abstract     = {The blazar TXS 0506+056 has been the first astrophysical
                      source associated with high-energy astrophysical neutrinos,
                      and it has emerged as the second-most-prominent hotspot in
                      the neutrino sky over ten years of observations. Although
                      neutrino production in blazars has traditionally been
                      attributed to processes in the powerful relativistic jet,
                      the observation of a significant neutrino flux from NGC 1068
                      -- presumably coming from the Active Galactic Nucleus (AGN)
                      corona -- suggests that neutrinos can also be produced in
                      the cores of AGN. This raises the question whether neutrino
                      production in TXS~0506+056 is also associated with the core
                      region. We study this scenario, focusing on the hypothesis
                      that this blazar is a masquerading BL Lac, a high-excitation
                      quasar with hidden broad emission lines and a standard
                      accretion disk. We show that magnetic reconnection is an
                      acceleration process necessary to reach tens of PeV proton
                      energies, and we use observationally motivated estimates of
                      the X-ray luminosity of the coronal region to predict the
                      emission of secondaries and compare them to the observed
                      multi-wavelength and neutrino spectra of the source. We find
                      that the coronal neutrino emission from TXS 0506+056 is too
                      low to describe the IceCube observed neutrinos from this
                      AGN, which in turn suggests that the blazar jet remains the
                      preferred location for neutrino production.},
      cin          = {$Z_THAT$},
      ddc          = {520},
      cid          = {$I:(DE-H253)Z_THAT-20210408$},
      pnm          = {613 - Matter and Radiation from the Universe (POF4-613)},
      pid          = {G:(DE-HGF)POF4-613},
      experiment   = {EXP:(DE-MLZ)NOSPEC-20140101},
      typ          = {PUB:(DE-HGF)16},
      eprint       = {2502.01738},
      howpublished = {arXiv:2502.01738},
      archivePrefix = {arXiv},
      SLACcitation = {$\%\%CITATION$ = $arXiv:2502.01738;\%\%$},
      doi          = {10.3847/1538-4357/add267},
      url          = {https://bib-pubdb1.desy.de/record/630941},
}