Speaker
Description
The weak anisotropies in the arrival directions of cosmic rays provide critical insights into their origin and propagation mechanisms. While rigidity-dependent variations offer a more direct and effective probe of cosmic-ray transport than energy-dependent evolution, such measurements have remained historically elusive. Here, for the first time, we reconstruct primary cosmic-ray rigidity using LHAASO-KM2A data by combining measurements of electromagnetic secondaries and muons. This enables us to observe rigidity-dependent anisotropies spanning from 10 TV to 500 TV, revealing that different nucleonic components exhibit consistent evolutionary behavior. Our findings carry important implications for understanding the origin and interstellar transport of cosmic rays.
