AI 中文总结
该研究针对探测到的银道面高能中微子银心过量，构建ReGal-$\boldsymbol{\u03b3}$伽马射线源模板，结合其他模型重现IceCube观测结果，结论稳健，未来测量可约束银河中微子源空间分布。
AI 中文摘要
已探测到银道面的高能中微子辐射，其显著性达$5.7\boldsymbol{\u03c3}$，且向银心方向存在显著过量。我们表明，该过量可由银河中微子源的空间分布自然解释。通过结合覆盖GeV到PeV能区的伽马射线源星表并筛选强子辐射候选体，我们构建了ReGal-$\boldsymbol{\u03b3}$——一种已分辨的银河伽马射线源模板，该模板也可能产生高能中微子。与银河弥散辐射模型相比，ReGal-$\boldsymbol{\u03b3}$预测的中微子强度更集中于银心方向。结合弥散宇宙射线辐射模型与未分辨的伽马射线源，该模板重现了IceCube所报道的谱能量分布与银经计数轮廓，无需对辐射模型进行额外重标。我们使用由不同星表构建的独立伽马射线源模板验证该结果，发现结论对源建模的不确定性具有鲁棒性。未来对能量依赖的中微子经向与纬向分布的测量，将为这些模型提供更严格的约束，并有助于确定银河中微子源的空间分布。
英文摘要
High-energy neutrino emission from the Galactic plane has been detected at a significance of $5.7σ$, with a prominent excess toward the inner Galaxy. We show that this excess can be naturally explained by the spatial distribution of Galactic neutrino sources. By combining $γ$-ray source catalogs spanning GeV-PeV energies and selecting candidate hadronic emitters, we construct ReGal-$γ$, a template of resolved Galactic $γ$-ray sources that may also produce high-energy neutrinos. Compared with models of Galactic diffuse emission, ReGal-$γ$ predicts a neutrino intensity that is more strongly concentrated toward the inner Galaxy. Combined with models of diffuse cosmic-ray emission and unresolved $γ$-ray sources, the template reproduces both the spectral energy distribution and the Galactic longitudinal count profile reported by IceCube without requiring additional renormalization of the emission models. We test this result using an independent $γ$-ray source template constructed from different catalogs and find that our conclusion is robust against uncertainties in source modeling. Future measurements of the energy-dependent longitudinal and latitudinal neutrino distributions will provide tighter constraints on these models and help determine the spatial distribution of Galactic neutrino sources.
Comments7+4 pages, 4+3 figures. To be submitted to ApJL, comments welcome
