Jump to content
Main menu
Main menu
move to sidebar
hide
Navigation
Main page
Recent changes
Random page
Help about MediaWiki
Special pages
Niidae Wiki
Search
Search
Appearance
Create account
Log in
Personal tools
Create account
Log in
Pages for logged out editors
learn more
Contributions
Talk
Editing
Cosmic ray
(section)
Page
Discussion
English
Read
Edit
View history
Tools
Tools
move to sidebar
hide
Actions
Read
Edit
View history
General
What links here
Related changes
Page information
Appearance
move to sidebar
hide
Warning:
You are not logged in. Your IP address will be publicly visible if you make any edits. If you
log in
or
create an account
, your edits will be attributed to your username, along with other benefits.
Anti-spam check. Do
not
fill this in!
==Energy== Cosmic rays attract great interest practically, due to the damage they inflict on microelectronics and life outside the protection of an atmosphere and magnetic field, and scientifically, because the energies of the most energetic [[ultra-high-energy cosmic ray]]s have been observed to approach {{nowrap|3 Γ {{10^|20}} eV }}<ref>{{cite news |author=Nerlich, Steve |date=12 June 2011 |title=Astronomy without a telescope β 'Oh-my-God' particles |website=Universe Today |url=http://www.universetoday.com/86490/astronomy-without-a-telescope-oh-my-god-particles/ |access-date=17 February 2013}}</ref> (This is slightly greater than 10 million times the design energy of particles accelerated by the [[Large Hadron Collider]], {{convert|7|TeV|eV|abbr=~|lk=on}}.<ref>{{cite web |title=LHC: The guide |series=FAQ: Facts and figures |year=2021 |page=3 |publisher=[[European Organization for Nuclear Research]] (CERN) |department=[[Large Hadron Collider]] |url=https://home.web.cern.ch/resources/brochure/knowledge-sharing/lhc-facts-and-figures |access-date=9 October 2022}}</ref>) One can show that such enormous energies might be achieved by means of the [[centrifugal mechanism of acceleration]] in [[active galactic nuclei]]. At {{convert|50|J|GeV|abbr=~|lk=on}},<ref>{{cite magazine |author=Gaensler, Brian |date=November 2011 |title=Extreme speed |magazine=COSMOS |issue=41 |page= |url=http://ska.cosmosmagazine.com/features/print/5162/extreme-speed |url-status=dead |archive-url=https://archive.today/20130407234845/http://ska.cosmosmagazine.com/features/print/5162/extreme-speed |archive-date=7 April 2013}}</ref> the highest-energy ultra-high-energy cosmic rays (such as the [[Oh-My-God particle|OMG particle]] recorded in 1991) have energies comparable to the kinetic energy of a {{convert|90|kph|mph|adj=on|abbr=~|lk=on}} baseball. As a result of these discoveries, there has been interest in investigating cosmic rays of even greater energies.<ref>{{cite journal |author1=Anchordoqui, L. |author2=Paul, T. |author3=Reucroft, S. |author4=Swain, J. |year=2003 |title=Ultrahigh energy cosmic rays: The state of the art before the Auger Observatory |journal=[[International Journal of Modern Physics A]] |volume=18 |issue=13 |pages=2229β2366 |doi=10.1142/S0217751X03013879 |arxiv=hep-ph/0206072 |bibcode=2003IJMPA..18.2229A |s2cid=119407673}}</ref> Most cosmic rays, however, do not have such extreme energies; the energy distribution of cosmic rays peaks at {{convert|300|MeV|J|abbr=~|lk=on}}.<ref>{{cite web |editor=Nave, Carl R. |title=Cosmic rays |website=HyperPhysics |publisher=[[Georgia State University]] |department=Physics and Astronomy Department |url=http://hyperphysics.phy-astr.gsu.edu/hbase/astro/cosmic.html |access-date=17 February 2013}}</ref>
Summary:
Please note that all contributions to Niidae Wiki may be edited, altered, or removed by other contributors. If you do not want your writing to be edited mercilessly, then do not submit it here.
You are also promising us that you wrote this yourself, or copied it from a public domain or similar free resource (see
Encyclopedia:Copyrights
for details).
Do not submit copyrighted work without permission!
Cancel
Editing help
(opens in new window)
Search
Search
Editing
Cosmic ray
(section)
Add topic