Photons as carriers of ultra-high energy in cosmic space
Absorbing process of ultrahigh-energy gamma-quanta in a cosmic space is investigated. It is shown that the main absorbing mechanism is the reactions arising at collisions of cosmic-ray photons with microwave and radio background ones. Estimate of the mean free path of a photon for different energies...
| Published in: | Вестник Самарского государственного технического университета. Серия «Физико-математические науки» |
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| Main Authors: | , |
| Format: | Article in Journal/Newspaper |
| Language: | English Russian |
| Published: |
Samara State Technical University
2013
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| Subjects: | |
| Online Access: | https://doi.org/10.14498/vsgtu1149 https://doaj.org/article/0b7f87df53774cc4910ab5d0e7e9a8ee |
| Summary: | Absorbing process of ultrahigh-energy gamma-quanta in a cosmic space is investigated. It is shown that the main absorbing mechanism is the reactions arising at collisions of cosmic-ray photons with microwave and radio background ones. Estimate of the mean free path of a photon for different energies gives evidence that gamma-quanta with energies E>1019 eV running from Active Galactic Nuclei seem to reach the Earth vicinity. This result is in agreement with the recent observations of extensive air shower array experiments realized by AGASA and Yakutsk. |
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