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Kosmisk str�ling

Kosmiske str�ler er subatomare partikler eller atomer med oprindelse udenfor Jordens atmosf�re, som har en kinetisk energi fra nogle f� milliarder eV til mere end 10²⁰ eV. De subatomare partikler kan v�re elektroner, protoner, neutroner og ioniserede atomer. De ioniserede atomer er fra en stor del af det periodiske system - helt op til uran.

En lille del, ca. 0,1% af de kosmiske str�ler, er fotoner i form af gammastr�ler.

I 1993 observerede man i Utah den mest energirige kosmiske str�le partikel p� 3*10²⁰ eV.

Se ogs�

• nordlys, sydlys

Universet udg�res af elementarpartikler og vakuum. Partiklerne er fordelt uj�vnt og partiklerne og partikelklynger ben�vnes forskelligt afh�ngig af t�thed og m�ngde; klyngerne sp�nder lige fra subatomare partikler til sorte huller.

En m�ngde af partikelklynger i vakuum er:

Gas | Atmosf�re | Solvind | Kosmisk str�ling | Asteroideb�lte | Stjernehob, Stjernet�ge | Solsystem | Galaksehob

Galakse relaterede artikler:

Aktiv galakse (Seyfert, Kvasar, Blazar) | M�lkevejen

Stjernerelaterede artikler incl. typer og stadier:

Astronomi | Brun dv�rg | Hvid dv�rg | Stjerne | R�d k�mpe | Neutronstjerne (pulsar, magnetar) | Kvarkstjerne | Sort hul

Stjernebegivenheder:

Supernova | Hypernova

Mindre himmellegemer:

Planet | M�ne | Komet | Meteoroide (meteor, meteorit, ildkugle) | Sm�planet (asteroide, planetoide)

Rumfart, rumrejse:

Rumelevator | Rumfart�j (rumraket, rumf�rge, rumskib) | Rumsonde | Rumstation | Astronaut | Kosmonaut

Andre emner:

Himmel | Himmellegeme | Satellit (Drabant) | Planetbane | Kosmologi | Big Bang | Big Crunch | Big Rip | Ormehul

Eksterne adresser

• University of Leeds: What are cosmic rays?
• Google: Cosmic Rays
• Cosmic Rays
• Cosmic Ray resources on the Net
• 23 April, 2002, BBC News, Cosmic ray mystery 'solved'
• Pierre Auger Observatory: An International Facility to Study the Highest Energy Cosmic Rays
• Northeastern University: Cosmic ray papers
• The influence of cosmic rays on terrestrial clouds and global warming, E. Palle Bago and C. J. Butler, Paper appeared in Astronomy & Geophysics, August 2000. Vol 41, Issue 4, pp 18-22.
• 31 October, 2003, BBCNews: Solar storm surge 'not over yet' Citat: "...aircraft traversing the north Atlantic were confined to a narrow corridor to minimise radiation exposure..."
• 2004-05-05, Sciencedaily: Scientists Announce Cosmic Ray Theory Breakthrough Citat: "...The theory could be the basis for a whole new understanding of the ways in which cosmic rays -- and their signature radio waves -- propagate and travel through intergalactic space..."