Scientists go one step closer to understanding the origins of cosmic rays

In new research, scientists at the University of Nagoya in Japan were able for the first time to quantify the proton and electron components of cosmics rays in a supernova remnant.

Recent imaging analysis of radio, X-ray and gamma ray radiation revealed that at least 70% of the very high energy gamma rays emitted by cosmic rays are due to protons relativistic, indicates RT.

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The new study, published in The Astrophysical Journal, helps solve a mystery about the acceleration site of protons, the main components of cosmic rays, and represents an important step in accurately determining where do they come from Cosmic rays, the highest-energy particles in the universe, first discovered in 1912.

This is the first time that the amount of cosmic rays produced in a supernova remnant has been quantitatively demonstrated. Cosmic rays are believed to be accelerated by the aftermath of supernova explosions and travel almost to Earth. At the speed of light. Understanding its origin is fundamental to understanding the evolution of our galaxy, since cosmic rays influence the chemical evolution of interstellar matter.

Recent advances in gamma ray observations have revealed that many remnants of supernovas they emit gamma rays at energies of teraelectronvolts. If gamma rays are produced by protons, the main component of cosmic rays, the origin of cosmic rays can be verified in supernova remnants.

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However, gamma rays are also produced by electrons, so it is necessary to determine whether the origin of the protons or electrons is dominant, and to measure the proportion of both. The results of this study provide convincing evidence that gamma rays They originate from the proton component, which is the main component of cosmic rays, and they clarify that galactic cosmic rays are produced by supernova remnants.

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