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Amaterasu Cosmic Ray Event

Amaterasu Cosmic Ray Event mind map
Recent News
January 2024
When
Detected on May 27, 2021
Published in Science journal on November 23, 2023
Why
Study high-energy cosmic rays
Understand universe's fundamental building blocks
What
Name
Amaterasu
After Japanese sun goddess
Energy Level
240 exa-electron volts
Rank
Second-highest-energy cosmic ray
Previous Records
320 EeV in 1991 (Oh-My-God particle)
213 EeV in 1993
280 EeV in 2001
Where
Detected by Telescope Array Project
Location
Utah, United States
Origin
Unknown
Possibly from Local Void
Who
Discoverer
Toshihiro Fujii
Affiliation
Osaka Metropolitan University
How
Detection Method
Surface detector array
Telescope Array Project
Significance
Challenges existing paradigms
May reveal unknown astronomical phenomena
Challenges
Unknown origin
Extends beyond Standard Model
Way Forward
Continued research
Upgraded experiment (TAx4)
Four times sensitivity

The Amaterasu cosmic ray event refers to the detection of an ultra-high-energy cosmic ray named after the Japanese sun goddess. It was identified as the second-highest-energy cosmic ray ever found, with energy levels reaching 240 exa-electron-volts. Detected on May 27, 2021, by the Telescope Array Project in Utah, USA, the cosmic ray’s origin remains a mystery. It was discovered by Dr. Toshihiro Fujii from Osaka Metropolitan University. This event is significant as it challenges existing scientific paradigms and could potentially reveal unknown astronomical phenomena or novel physical origins that extend beyond the current Standard Model of particle physics.

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