Hidetoshi Sano Books

Focusing on the supernova remnant RX J1713.7-3946, the study explores the origins of cosmic rays in our galaxy through X-ray and gamma radiation from cosmic ray particles. Utilizing data from the NANTEN2 radio telescope, it reveals a strong correlation between gamma rays and interstellar gas, providing evidence for the acceleration of cosmic ray protons. The author highlights the significance of "shock-cloud interaction" between supernova shockwaves and interstellar gas in enhancing cosmic ray electron acceleration, offering new insights into high-energy radiation and cosmic ray behavior.

This book presents a study of the young supernova remnant RX J1713.7-3946 in order to reveal the origin of cosmic rays in our galaxy. The study focuses on the X-ray and gamma radiation from the cosmic ray electrons and protons in the supernova remnant as well as the emission from the surrounding interstellar gas measured by the NANTEN2 4-m radio telescope at Nagoya University. The gamma rays show a good spatial correspondence with the interstellar gas, which for the first time provides strong evidence of the acceleration of cosmic ray protons. Additionally, the author determines that an interaction between the supernova shockwaves and interstellar gas, referred to as “shock-cloud interaction,” promotes the efficient acceleration of cosmic ray electrons in the supernova remnant. The book reveals that the interstellar gas plays an essential role in producing the high-energy radiation and cosmic rays, offering vital new insights into the origin and behavior of galactic cosmic rays.