Speaker
Description
We present the preliminary 2LHAASO catalog of VHE-UHE gamma-ray sources detected by LHAASO, constructed using KM2A and WCDA data collected up to July 2025. Benefiting from increased exposure as well as improved reconstruction and analysis techniques, this catalog significantly improves upon the first release (1LHAASO) in detection sensitivity and source resolving. In this talk, we will describe the catalog construction and present the preliminary results. This work provides an updated view of the VHE-UHE gamma-ray sky and motivates further deep, multi-wavelength investigations of both individual sources and source populations. Notably, a significant fraction of the sources exhibit likely associations with known pulsars, i.e., candidate PWNe or halos. We will also present a preliminary population study of these PWNe/halos.
