Research on Particle Acceleration Mechanisms in Supernova Remnants and Understanding the Origin of Cosmic Rays

Supernova remnants are nebulae formed after massive stars (more than 8 times the mass of the Sun) or certain binary systems undergo supernova explosions in the final stages of their lives. They exert a profound influence on the cosmos, generating shock waves expanding at speeds of 10,000 km/s and supplying essential heavy elements crucial for the formation of life in the universe. While supernova remnants are considered the primary sources of cosmic rays, which are high-energy particle radiation filling space, definitive observational conclusions have not been reached even a century after their discovery. We are tackling the challenge of unraveling the mechanisms behind cosmic ray acceleration and their origins, long regarded as astronomical mysteries, using an innovative approach that combines X-ray, gamma-ray, and radio emission data from supernova remnants.