Cosmic ray
Cosmic rays are very heich-energy particles, mainly oreeginatin ootside the Solar Seestem.[1] Thay mey produce showers o seicontary particles that penetrate an impact the Yird's atmosphere an whiles even reach the surface. Componed primarily o heich-energy protons an atomic nuclei, thay are o mysterious origin. Data frae the Fermi space telescope (2013)[2] hae been interpreted as evidence that a significant fraction o primary cosmic rays originate frae the supernovae o massive starns.[3] Houiver, this is nae thoucht tae be thair anly soorce. Active galactic nuclei probably an aa produce cosmic rays.
References
[eedit | eedit soorce]- ↑ Sharma (2008). Atomic And Nuclear Physics. Pearson Education India. p. 478. ISBN 978-81-317-1924-4.
- ↑ Ackermann, M.; Ajello, M.; Allafort, A.; Baldini, L.; Ballet, J.; Barbiellini, G.; Baring, M. G.; Bastieri, D.; Bechtol, K.; Bellazzini, R.; Blandford, R. D.; Bloom, E. D.; Bonamente, E.; Borgland, A. W.; Bottacini, E.; Brandt, T. J.; Bregeon, J.; Brigida, M.; Bruel, P.; Buehler, R.; Busetto, G.; Buson, S.; Caliandro, G. A.; Cameron, R. A.; Caraveo, P. A.; Casandjian, J. M.; Cecchi, C.; Celik, O.; Charles, E.; Chaty, S. (15 Februar 2013). "Detection of the Characteristic Pion-Decay Signature in Supernova Remnants". Science. American Association for the Advancement of Science. 339 (6424): 807–811. arXiv:1302.3307. Bibcode:2013Sci...339..807A. doi:10.1126/science.1231160. Retrieved 14 Februar 2013.
- ↑ Ginger Pinholster (13 Februar 2013). "Evidence Shows that Cosmic Rays Come from Exploding Stars".