@conference {30277,
	title = {A Neutral Beam Model for High-energy Neutrino Emission from the Blazar TXS 0506+056},
	volume = {2021},
	year = {2021},
	month = {2021/01/1},
	pages = {G10.006},
	abstract = {The IceCube collaboration reported a ~ 3 . 5 σ excess of neutrino events in the direction of the blazar during a ~6 month period in 2014-2015, as well as the (~ 3 σ) detection of a high-energy muon neutrino during an electromagnetic flare in 2017. We explore the possibility that the 2014-2015 neutrino excess and the 2017 multi-messenger flare are both explained in a common physical framework that relies on the emergence of a relativistic neutral beam in the blazar jet due to interactions of accelerated cosmic rays (CRs) with photons. We demonstrate that the neutral beam model provides an explanation for the 2014-2015 neutrino excess without violating X-ray and γ-ray constraints, and also yields results consistent with the detection of one high-energy neutrino during the 2017 flare. If both neutrino associations with TXS 05065+056 are real, our model requires that (i) the composition of accelerated CRs is light, with a ratio of helium nuclei to protons >~ 5 , (ii) a luminous external photon field (~10<SUP>46</SUP> erg s-<SUP>1</SUP>) variable (on year-long timescales) is present, and (iii) the CR injection luminosity as well as the properties of the dissipation region (i.e., Lorentz factor, magnetic field, and size) vary on year-long timescales.},
	url = {https://ui.adsabs.harvard.edu/abs/2021APS..APRG10006Z},
	author = {Zhang, B. Theodore and Petropoulou, Maria and Murase, Kohta and Oikonomou, Foteini}
}
