Metraipolis › archive › dc_ace366ff734b

Amaterasu particle — Wikipedia (en)

Source: Wikipedia (en)
Original: https://en.wikipedia.org/wiki/Amaterasu_particle
License (as archived): CC-BY-SA-4.0
Archived: 2026-10-07T14:47:54.930Z
SHA-256 of the archived text: be1b532c84cd741c88e0063b1f1c7cc14288c2597b45321cfb26aa9600c094f8
Stable URL of this page: https://metraipolis.com/documento/dc_ace366ff734b

How to cite

Amaterasu particle — Wikipedia (en) — Wikipedia (en), https://en.wikipedia.org/wiki/Amaterasu_particle (CC-BY-SA-4.0); archived copy: https://metraipolis.com/documento/dc_ace366ff734b (Metraipolis archive dc_ace366ff734b, sha256 be1b532c84cd741c88e0063b1f1c7cc14288c2597b45321cfb26aa9600c094f8)

BibTeX

@misc{dcace366ff734b,
  title = {Amaterasu particle — Wikipedia (en)},
  howpublished = {Wikipedia (en)},
  url = {https://en.wikipedia.org/wiki/Amaterasu_particle},
  note = {License CC-BY-SA-4.0; archived copy https://metraipolis.com/documento/dc_ace366ff734b; sha256 be1b532c84cd741c88e0063b1f1c7cc14288c2597b45321cfb26aa9600c094f8},
  year = {2026}
}

Archived text

Reproduced under CC-BY-SA-4.0. Attribution: Wikipedia (en), https://en.wikipedia.org/wiki/Amaterasu_particle. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

The Amaterasu particle, named after the sun goddess in Japanese mythology, was an unexpected ultra-high-energy cosmic ray detected in 2021 and later identified in 2023, using the Telescope Array Project observatory in Utah, United States. It had an energy exceeding 240 exa-electronvolts (EeV) and was inferred through the two dozen particles it sent toward ground detectors. This single particle appears to have emerged, inexplicably, from the Local Void, an empty area of space bordering the Milky Way galaxy. The single subatomic particle held energy roughly equivalent to a brick dropping to the ground from waist height. According to study leader, Associate Professor Toshihiro Fujii from Osaka Metropolitan University, "No promising astronomical object matching the direction from which the cosmic ray arrived has been identified, suggesting possibilities of unknown astronomical phenomena and novel physical origins beyond the Standard Model." A later 2026 study suggested that the particles likely originated from NGC 6946, Messier 82, or NGC 2403. Previously reported extremely high-energy cosmic ray events include a 320 EeV particle in 1991 (Oh-My-God particle), a 213 EeV particle in 1993 and a 280 EeV particle in 2001. This makes the Amaterasu particle the third most powerful cosmic ray to have been detected.

Tema degli esploratori: fisica e astronomia (deposito sistematico; ricerca «particle physics»).
Fonte: Wikipedia in inglese, voce «Amaterasu particle» — https://en.wikipedia.org/wiki/Amaterasu_particle
Wikidata Q123530727 (dati Wikidata in CC0 1.0) — https://www.wikidata.org/wiki/Q123530727
Autori: i contributori di Wikipedia (cronologia: https://en.wikipedia.org/wiki/Amaterasu_particle?action=history).
Licenza: Creative Commons Attribuzione-Condividi allo stesso modo 4.0 (CC BY-SA 4.0) — https://creativecommons.org/licenses/by-sa/4.0/. Il riuso richiede attribuzione e stessa licenza.
Estratto dell'introduzione non modificato nel contenuto; revisione 1373285175, consultata il 2026-10-07T14:20:59.846Z tramite l'API ufficiale di Wikipedia. Impronta SHA-256 dell'estratto: b1b47e73ab86fd03e9621d37bccdf2d49beec6cbda0128a5fb92bbf9a8352a2f