Speaker
Description
J0956+4622 is a high-latitude ultra-high-energy gamma-ray source observed by LHAASO, and its physical interpretation requires a robust control of analysis systematics. In this work, we present a unified systematic-uncertainty study developed along our source-analysis chain, rather than focusing on a single effect. The study includes atmospheric effects (especially pressure-related variations), atmosphere-model dependence in simulations (ERA5 vs. standard atmosphere), reconstruction-related effects (including angular-response non-uniformity), and gamma/hadron-separation-related uncertainties (Nu/Ne behavior in data and MC). We evaluate how these terms propagate to morphology, flux, and spectral measurements, and organize them into a practical systematic-error budget. This framework is used to reduce interpretation bias in the multi-wavelength study of J0956+4622, where reliable source characterization is essential for follow-up strategy and physical scenario discrimination. We will present the workflow, current quantitative status, and the next steps toward a consolidated uncertainty budget for publication-level source analysis.
