论文标题
从宇宙射线全球拟合的银河高能中微子的扩散发射
Diffuse Emission of Galactic High-Energy Neutrinos from a Global Fit of Cosmic Rays
论文作者
论文摘要
在银河宇宙射线的标准图片中，高能量伽玛射线和中微子的扩散通量是由宇宙射线核与星际气体的非弹性碰撞产生的。中微子通量是高能中微子观测值（例如IceCube）的保证信号，但尚未发现。对此通量的实验搜索构成了银河宇宙射线标准图片的重要测试。观察和非观察性都将允许对宇宙射线加速和运输物理学的重要意义。我们提出了Cringe，这是一个新的银河弥漫性高能伽马射线和中微子的模型，它适用于来自AMS-02，Dampe，Icetop以及Kascade的近期宇宙射线数据。我们量化了宇宙射线模型的预测发射的不确定性，还可以从源分布，气体图和横截面的选择中量化。我们考虑了未解决的来源贡献的可能性。我们的模型预测表现出与较旧模型的显着偏差。我们的基准模型可在https://doi.org/10.5281/zenodo.7373010上找到。
In the standard picture of galactic cosmic rays, a diffuse flux of high-energy gamma-rays and neutrinos is produced from inelastic collisions of cosmic ray nuclei with the interstellar gas. The neutrino flux is a guaranteed signal for high-energy neutrino observatories such as IceCube, but has not been found yet. Experimental searches for this flux constitute an important test of the standard picture of galactic cosmic rays. Both the observation and non-observation would allow important implications for the physics of cosmic ray acceleration and transport. We present CRINGE, a new model of galactic diffuse high-energy gamma-rays and neutrinos, fitted to recent cosmic ray data from AMS-02, DAMPE, IceTop as well as KASCADE. We quantify the uncertainties for the predicted emission from the cosmic ray model, but also from the choice of source distribution, gas maps and cross-sections. We consider the possibility of a contribution from unresolved sources. Our model predictions exhibit significant deviations from older models. Our fiducial model is available at https://doi.org/10.5281/zenodo.7373010 .
