We reexamine evidence that the Galactic Center Excess (GCE) originates primarily from point sources (PSs). We show that in our region of interest, non-Poissonian template fitting evidence for GCE PSs is an artifact of unmodeled north-south asymmetry of the GCE. This asymmetry is strongly favored by the fit (although it is unclear if this is physical), and when it is allowed, the preference for PSs becomes insignificant. We reproduce this behavior in simulations, including detailed properties of the spurious PS population. We conclude that the non-Poissonian template fitting evidence for GCE PSs is highly susceptible to certain systematic errors and should not at present be taken to robustly disfavor a dominantly smooth GCE.

中文翻译：

---

银河系中心多余的杂散点源信号

我们重新检查银河中心超额（GCE）主要来自点源（PS）的证据。我们表明，在我们感兴趣的区域中，GCE PS的非泊松模板拟合证据是GCE的南北不对称非模型的人工产物。这种不对称性非常受拟合的支持（尽管尚不清楚这是否物理上），并且在允许时，对PS的偏好变得微不足道。我们在仿真中重现了此行为，包括伪PS种群的详细属性。我们得出的结论是，GCE PS的非泊松模板拟合证据极易受到某些系统错误的影响，因此，目前不应该认为该证据有力地不利于显着光滑的GCE。