Speaker
广威 王
(University of Science and Technology of China)
Description
In this presentation we report the very-high-energy (VHE) to ultra-high-energy (UHE) \gray emission detected by the Large High Altitude Air Shower Observation (LHAASO), from the direction toward the young star-forming region W43. The extended \gray source is detected with a significance of ${\sim}23\,\sigma$ with KM2A and a significance of ${\sim}27\,\sigma$ with WCDA. The angular extension of this \gray source is about 0.6 degrees, which corresponds to a physical size of about 50 pc. Together with the multiwavelength data we discuss the origin of the \gray emission and possible CR acceleration in the W43 region. The spatial and spectral features reveal that W43 is likely another young star cluster that can accelerator CRs.
