Core Viewpoint - The LHAASO (Large High Altitude Air Shower Observatory) in Daocheng, Sichuan Province, has systematically detected five ultra-high-energy gamma-ray signals from microquasars formed by the interaction of black holes and companion stars, providing crucial evidence for understanding the origin of cosmic rays [1] Group 1 - The detection of gamma-ray signals indicates that microquasars act as powerful "particle accelerators," capable of accelerating cosmic rays to energies at and above the "knee" region of the cosmic ray energy spectrum [1] - The "knee" refers to a specific structure in the cosmic ray energy spectrum, occurring around 30 trillion electron volts, where the number of cosmic rays sharply decreases [1] - This discovery offers key observational evidence to address the long-standing mystery of the formation of the cosmic ray "knee" and points to new directions for solving this scientific challenge [1]

Core Insights - The LHAASO (Large High Altitude Air Shower Observatory) in Sichuan, China, has made a significant discovery by systematically detecting five ultra-high-energy gamma-ray signals from microquasars formed by the interaction of black holes and companion stars [3] Group 1: Discovery Details - The detected gamma-ray signals are believed to provide clues about the origin of cosmic rays, particularly in the "knee" region of the cosmic ray energy spectrum, which is around 30 trillion electron volts [3] - The "knee" represents a structural inflection in the cosmic ray energy spectrum, where the number of cosmic rays sharply decreases above this energy level [3] - This discovery indicates that microquasars act as powerful "particle accelerators," capable of accelerating cosmic rays to energies at or above the "knee," offering critical observational evidence to solve the long-standing mystery of the formation of the cosmic ray "knee" [3]