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@ARTICLE{Acharyya:642350,
      author       = {Acharyya, A. and Archer, A. and Bangale, P. and Bartkoske,
                      J. T. and Benbow, W. and Buckley, J. H. and Chen, Y. and
                      Christiansen, J. L. and Duerr, A. and Errando, M. and Godoy,
                      M. Escobar and Falcone, A. and Feldman, S. and Feng, Q. and
                      Filbert, S. and Fortson, L. and Furniss, A. and Hanlon, W.
                      and Hervet, O. and Hinrichs, C. E. and Holder, J. and
                      Hughes, Z. and Iskakova, M. and Jin, W. and Kaaret, P. and
                      Kertzman, M. and Kherlakian, M. and Kieda, D. and Kleiner,
                      Tobias Kai and Korzoun, N. and Lang, M. J. and Lundy, M. and
                      Maier, G. and Mooney, C. L. and Mukherjee, R. and Ning, W.
                      and Ong, R. A. and Pandey, A. and Pohl, Martin and Pueschel,
                      E. and Quinn, J. and Rabinowitz, P. L. and Ragan, K. and
                      Reynolds, P. T. and Ribeiro, D. and Roache, E. and Sadeh, I.
                      and Sadun, A. C. and Saha, L. and Sembroski, G. H. and
                      Shang, R. and Splettstoesser, M. and Tak, D. and Talluri, A.
                      K. and Tucci, J. V. and Valverde, J. and Williams, D. A. and
                      Wong, S. L. and Yoshikoshi, T. and Meyer, M. and Müller,
                      J.},
      title        = {{P}robing a cosmogenic origin of astrophysical neutrinos
                      and cosmic rays using gamma-ray observations of {TXS}
                      0506+056},
      reportid     = {PUBDB-2025-05505, arXiv:2511.06116},
      isbn         = {https://inspirehep.net/literature/3081479},
      year         = {2025},
      note         = {14 pages, 5 figures, Accepted for publication in the
                      Astrophysical Journal (ApJ)},
      abstract     = {In September 2017, a high-energy neutrino event detected by
                      the IceCube Neutrino Observatory (IceCube-170922A) was
                      associated, at the $3σ$ level, with a gamma-ray flare from
                      the blazar TXS 0506+056. Cosmic rays that are accelerated in
                      astrophysical sources can escape from their jets and
                      interact with background radiation fields. Interactions with
                      the extragalactic background light can produce pions and
                      hence neutrinos, while interactions with the cosmic
                      microwave background predominantly drive inverse Compton
                      scattering, contributing to electromagnetic cascades in
                      intergalactic space. The resulting secondary gamma-ray
                      emission can be detected with high-energy gamma-ray
                      telescopes. Here, we report on a new search for such
                      cosmogenic cascade emission from the blazar TXS 0506+056,
                      using a combined data set from the Fermi-Large Area
                      Telescope and VERITAS. We compare the gamma-ray spectrum and
                      neutrino observations with the predictions of cosmic-ray
                      induced cascades in intergalactic space. The observed
                      gamma-ray spectrum is modeled as a combination of the
                      primary spectrum and the cascade spectrum. We apply a Monte
                      Carlo simulation with a $Δχ^2$-based likelihood analysis
                      to jointly determine the best-fit parameters of a proton
                      emission spectrum describing the data and derive constraints
                      on the proton escape luminosity. Assuming a log-parabola
                      primary photon spectrum, we find consistency with a proton
                      injection spectral index of $α_{p} \simeq 2.0$ and a cutoff
                      energy of $E_{p,\text{max}} \simeq 1.3 \times 10^{16}$ eV,
                      and constrain the isotropic proton escape luminosity to $1
                      \times 10^{44}$ erg s$^{-1}$$\lesssim L_{p, esc} \lesssim 3
                      \times 10^{45}$ erg s$^{-1}$ at the 90 \% confidence level.},
      cin          = {$Z_GA$},
      cid          = {$I:(DE-H253)Z_GA-20210408$},
      pnm          = {613 - Matter and Radiation from the Universe (POF4-613)},
      pid          = {G:(DE-HGF)POF4-613},
      experiment   = {EXP:(DE-H253)VERITAS-20170101},
      typ          = {PUB:(DE-HGF)25 / PUB:(DE-HGF)3},
      eprint       = {2511.06116},
      howpublished = {arXiv:2511.06116},
      archivePrefix = {arXiv},
      SLACcitation = {$\%\%CITATION$ = $arXiv:2511.06116;\%\%$},
      url          = {https://bib-pubdb1.desy.de/record/642350},
}