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Amaterasu: Rare and Super-Energetic Particle from Outer Space

January 12, 2024

GS Paper III Science and Technology

Context:

Recently, Scientists have detected a rare and extremely high-Energetic Particles cosmic ray  known as Amaterasu particles falling to Earth.

About Amaterasu: Cosmic Ray with Unprecedented Energy

  • Amaterasu’s origin remains a mystery as it appears to come from an empty part of the universe, defying existing astronomical explanations.
  • It is the second-highest-energy cosmic ray detected and was found by analyzing data collected between May 2008 and November 2021 by the Telescope Array Project in the U.S.
  • The Amaterasu particle has an energy exceeding 240 exa-electron volts (EeV), millions of times more than particles produced in the Large Hadron Collider (the most powerful accelerator ever built).

What are Cosmic Rays?

  • Cosmic rays are high energy particles that move through space at nearly the speed of light. 
  • Most cosmic rays are atomic nuclei stripped of their atoms with protons (hydrogen nuclei) being the most abundant type but nuclei of elements as heavy as lead have been measured.
  • Cosmic rays provide direct samples of matter from outside the solar system. 

News Source: The Hindu

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