The potential association between the blazar TXS 0506+056 and the neutrino event IceCube-170922A provides a unique opportunity to study the possible physical connection between the high-energy photons and neutrinos. We explore the correlated electromagnetic and neutrino emissions of blazar TXS 0506+056 by a self-consistent leptonic-hadronic model, taking into account particle stochastic acceleration and all relevant radiative processes self-consistently. The electromagnetic and neutrino spectra of blazar TXS 0506+056 are reproduced by the proton synchrotron and hybrid leptonic-hadronic models based on the proton-photon interactions. It is found that the hybrid leptonic-hadronic model can be used to better explain the observed X-ray and $\gamma$-ray spectra of blazar TXS 0506+056 than the proton synchrotron model. Moreover, the predicted neutrino spectrum of the hybrid leptonic-hadronic model is closer to the observed one compared to the proton synchrotron model. We suggest that the hybrid leptonic-hadronic model is more favored if the neutrino event IceCube-170922A is associated with the blazar TXS 0506+056.

中文翻译：

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对来自耀变体 TXS 0506+056 的电磁和中微子发射的自洽轻子-强子解释

耀变体 TXS 0506+056 与中微子事件 IceCube-170922A 之间的潜在关联为研究高能光子和中微子之间可能的物理联系提供了独特的机会。我们通过自洽的轻子-强子模型探索了耀变体 TXS 0506+056 的相关电磁和中微子发射，同时考虑到粒子随机加速度和所有相关的辐射过程。基于质子-光子相互作用的质子同步加速器和混合轻子-强子模型再现了耀变体TXS 0506+056的电磁和中微子光谱。发现混合轻子-强子模型可以比质子同步加速器模型更好地解释耀变体TXS 0506+056观测到的X射线和γ射线谱。而且，与质子同步加速器模型相比，混合轻子-强子模型的预测中微子谱更接近于观察到的中微子谱。如果中微子事件 IceCube-170922A 与耀变体 TXS 0506+056 相关，我们建议混合轻子-强子模型更受欢迎。