[Propagation des rayons cosmiques ultra-énergétiques]
Tout rayon cosmique dont l'énergie est proche de 1020 eV subit des interactions inélastiques avec le fond cosmologique micro-onde ou avec d'autres champs de photons d'origine astrophysique, en perdant une partie de son énergie. Nous décrivons brièvement les mécanismes de perte d'énergie et en analysons les conséquences sur la propagation de protons dans l'epace extra-galactique. Nous décrivons également l'effet des champs magnétiques d'origine astrophysique sur la propagation.
All particles of energy approaching 1020 eV interact inelastically in the microwave background and other astrophysical photon fields and lose energy. We describe briefly the energy loss processes and show the consequences of proton propagation in extragalactic space. We also discuss the influence of astrophysical magnetic fields on the propagation.
Mots-clés : Rayonnement fossile, Perte d'énergie, Coupure GZK, Champs magnétiques (galactiques et extra-galactiques)
Todor Stanev 1
@article{CRPHYS_2004__5_4_453_0, author = {Todor Stanev}, title = {Propagation of ultra high energy cosmic rays}, journal = {Comptes Rendus. Physique}, pages = {453--461}, publisher = {Elsevier}, volume = {5}, number = {4}, year = {2004}, doi = {10.1016/j.crhy.2004.03.014}, language = {en}, }
Todor Stanev. Propagation of ultra high energy cosmic rays. Comptes Rendus. Physique, Ultimate energy particles in the Universe, Volume 5 (2004) no. 4, pp. 453-461. doi : 10.1016/j.crhy.2004.03.014. https://comptes-rendus.academie-sciences.fr/physique/articles/10.1016/j.crhy.2004.03.014/
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