Editing Oh-My-God particle (section)

{{Short description|Ultra-high-energy cosmic ray detected in 1991}}
{{Distinguish|text=the "God Particle", or [[Higgs boson]]}}
{{Use American English|date=March 2021}}
{{Use mdy dates|date=March 2021}}

The '''Oh-My-God particle''' was an [[ultra-high-energy cosmic ray]] detected on 15&nbsp;October 1991 by the [[Fly's Eye]] camera in [[Dugway Proving Ground]], [[Utah]], [[United States]].<ref>{{cite journal |last1=Bird |first1=D. J. |last2=Corbato |first2=S. C. |last3=Dai |first3=H. Y. |last4=Elbert |first4=J. W. |last5=Green |first5=K. D. |last6=Huang |first6=M. A. |last7=Kieda |first7=D. B. |last8=Ko |first8=S. |last9=Larsen |first9=C. G. |last10=Loh |first10=E. C. |last11=Luo |first11=M. Z. |last12=Salamon |first12=M. H. |last13=Smith |first13=J. D. |last14=Sokolsky |first14=P. |last15=Sommers |first15=P. |date=March 1995 |title=Detection of a cosmic ray with measured energy well beyond the expected spectral cutoff due to cosmic microwave radiation |journal=[[The Astrophysical Journal]] |volume=441 |pages=144 |arxiv=astro-ph/9410067 |bibcode=1995ApJ...441..144B |doi=10.1086/175344 |s2cid=119092012 |doi-access=free |last16=Tang |first16=J. K. K. |last17=Thomas |first17=S. B.}}</ref><ref>{{cite web |last=<!-- no author attribution --> |date=<!-- not specified --> |title=HiRes – The High Resolution Fly's Eye Ultra High Energy Cosmic Ray Observatory |url=http://www.cosmic-ray.org/reading/flyseye.html#SEC10 |url-status=live |archive-url=https://web.archive.org/web/20090815102123/http://www.cosmic-ray.org/reading/flyseye.html#SEC10 |archive-date=August 15, 2009 |access-date=February 6, 2024 |website=H i R e s / High Resolution Fly's Eye |publisher=[[University of Utah]] |at=The highest energy particle ever recorded}}</ref><ref name=q/> {{Asof|2023}}, it is the highest-energy [[cosmic ray]] ever observed.<ref>{{cite journal |last1=O’Callaghan |first1=Jonathan |date=May 30, 2023 |title=We are finally closing in on the cosmic origins of the 'OMG particle' |url=https://www.newscientist.com/article/mg25834413-100-we-are-finally-closing-in-on-the-cosmic-origins-of-the-omg-particle/ |url-status=live |journal=[[New Scientist]] |url-access=limited |archive-url=https://web.archive.org/web/20230609005718/https://www.newscientist.com/article/mg25834413-100-we-are-finally-closing-in-on-the-cosmic-origins-of-the-omg-particle/ |archive-date=June 9, 2023 |access-date=June 8, 2023}}</ref> Its energy was estimated as {{val|3.2|0.9|e=20|ul=eV}} (320 [[metric prefix|exa]]-eV). The particle's energy was unexpected and called into question prevailing theories about the origin and propagation of cosmic rays.