【人民日报】用好“拉索”，揭示宇宙线起源之谜

Core Insights - The "LHAASO" (Large High Altitude Air Shower Observatory) has successfully identified black hole accretion-driven microquasars as significant sources of ultra-high-energy cosmic rays, revealing new insights into the origins of cosmic rays and the extreme physical processes of black hole systems [1][2] Group 1: Research Findings - The cosmic ray proton energy spectrum shows an unexpected "bump" in the "knee" region, indicating the presence of a new type of source capable of producing extremely high-energy cosmic rays [2] - The findings suggest that there are multiple types of acceleration sources within the Milky Way, each with unique acceleration capabilities and energy ranges, with the "knee" representing the acceleration limit for high-energy components [2] Group 2: Technological Advancements - "LHAASO" is the world's most sensitive ultra-high-energy gamma-ray detection facility, located at an altitude of 4,410 meters in Sichuan, China, and is designed to decode high-energy particle signals from deep space [3] - The observatory employs a combination of ground-based particle detectors, water Cherenkov detectors, and wide-angle atmospheric Cherenkov telescopes to achieve high-precision, all-weather observations of ultra-high-energy cosmic rays and gamma rays [3] Group 3: Future Plans - The research team plans to measure a broader energy range of the proton energy spectrum, ultimately covering four orders of magnitude in energy [2] - The team aims to deepen scientific data analysis and promote technological upgrades to address major international research questions in the field of cosmic ray studies [2]