论文标题
VER J2227+608的HADRONIC VS LEPTONIC模型
Hadronic vs leptonic models for $γ$-ray emission from VER J2227+608
论文作者
论文摘要
对VER J2227+608的最新观察结果显示，损坏的功率$γ$ -Ray光谱，光谱指数从GEV Energy系列的$ \ sim 1.8 $增加到TEV范围内的$ \ sim 2.3 $。这样的光谱中断可以归因于在$γ$ ray发射的Leptonic情况下的辐射能量损失，该发射与附近PULSAR的特征年龄结合使用，可用于限制发射区域中的磁场。我们表明，在这种情况下，也可以解释无线电和X射线观察结果。在耐药的情况下，光谱中断可以归因于能量离子在湍流介质中的扩散，并且可以使用详细的光谱测量来限制扩散系数。然而，这两个模型预测了100 tev以上的光谱截然不同，这将通过未来的高分辨率观测值（例如Lhaaso和/或CTA）进行发现。
Recent observations of VER J2227+608 reveal a broken power $γ$-ray spectrum with the spectral index increasing from $\sim 1.8$ in the GeV energy range to $\sim 2.3$ in the TeV range. Such a spectral break can be attributed to radiative energy loss of energetic electrons in the leptonic scenario for the $γ$-ray emission, which, in combination with characteristic age of the nearby pulsar, can be used to constrain magnetic field in the emission region. We show that the radio and X-ray observations can also be explained in such a scenario. In the hadronic scenario, the spectral break can be attributed to diffusion of energetic ions in a turbulent medium and detailed spectral measurement can be used to constrain the diffusion coefficient. These two models, however, predict drastically different spectra above 100 TeV, which will be uncovered with future high-resolution observations, such as LHAASO and/or CTA.
