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GRAPES-3 Experiment
- 08 Feb 2024
- 1 min read
Source: Phys.org
The GRAPES-3 experiment in Ooty, India, operated by the Tata Institute of Fundamental Research has discovered a new feature in the cosmic-ray proton spectrum.
- It was observed at about 166 tera-electron-volt (TeV) energy while measuring the spectrum spanning from 50 TeV to a little over 1 peta-electron-volt (PeV).
- "GRAPES-3 experiment discovers new feature above 100 TeV but below the cosmic-ray proton "Knee," suggesting a deviation from single power-law spectrum."
- The observed feature suggests a potential re-evaluation of our understanding of cosmic-ray sources, acceleration mechanisms, and their propagation within our galaxy.
- Centuries-old discovery, cosmic rays are the universe's most energetic particles, bombarding Earth uniformly from all directions, inducing fast-moving particle showers comprising electrons, photons, muons, protons, neutrons, etc.
- Cosmic rays exhibit a broad energy range (10^8 to 10^20 eV) with a steeply decreasing flux based on a power law.
- Centuries-old discovery, cosmic rays are the universe's most energetic particles, bombarding Earth uniformly from all directions, inducing fast-moving particle showers comprising electrons, photons, muons, protons, neutrons, etc.
Read more: Cosmic Rays
