Photon damping in cosmic-ray acceleration in active galactic nuclei
Abstract
The usual assumption of the acceleration of ultra high energy cosmic rays, greater than or equal to 10/sup 18/ eV in quasars, Seyfert galaxies and other active galactic nuclei is challenged on the basis of the photon interactions with the accelerated nucleons. This is similar to the effect of the black body radiation on particles > 10/sup 20/ eV for times of the age of the universe except that the photon spectrum is harder and the energy density greater by approx. = 10/sup 15/. Hence, a single traversal, radial or circumferential, of radiation whose energy density is no greater than the emitted flux will damp an ultra high energy. Hence, it is unlikely that any reasonable configuration of acceleration can void disastrous photon energy loss. A different site for ultra high energy cosmic ray acceleration must be found.
- Authors:
- Publication Date:
- Research Org.:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- OSTI Identifier:
- 6081815
- Report Number(s):
- LA-UR-83-1048; CONF-830830-2
ON: DE83011320
- DOE Contract Number:
- W-7405-ENG-36
- Resource Type:
- Conference
- Resource Relation:
- Conference: 18. international cosmic ray conference, Bangalore, India, 22 Aug 1983; Other Information: Portions are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; COSMIC RADIATION; ACCELERATION; ENERGY LOSSES; DAMPING; GALAXY NUCLEI; PHOTON COLLISIONS; QUASARS; SEYFERT GALAXIES; COLLISIONS; COSMIC RADIO SOURCES; GALAXIES; IONIZING RADIATIONS; LOSSES; RADIATIONS; 640101* - Astrophysics & Cosmology- Cosmic Radiation
Citation Formats
Colgate, S A. Photon damping in cosmic-ray acceleration in active galactic nuclei. United States: N. p., 1983.
Web.
Colgate, S A. Photon damping in cosmic-ray acceleration in active galactic nuclei. United States.
Colgate, S A. 1983.
"Photon damping in cosmic-ray acceleration in active galactic nuclei". United States. https://www.osti.gov/servlets/purl/6081815.
@article{osti_6081815,
title = {Photon damping in cosmic-ray acceleration in active galactic nuclei},
author = {Colgate, S A},
abstractNote = {The usual assumption of the acceleration of ultra high energy cosmic rays, greater than or equal to 10/sup 18/ eV in quasars, Seyfert galaxies and other active galactic nuclei is challenged on the basis of the photon interactions with the accelerated nucleons. This is similar to the effect of the black body radiation on particles > 10/sup 20/ eV for times of the age of the universe except that the photon spectrum is harder and the energy density greater by approx. = 10/sup 15/. Hence, a single traversal, radial or circumferential, of radiation whose energy density is no greater than the emitted flux will damp an ultra high energy. Hence, it is unlikely that any reasonable configuration of acceleration can void disastrous photon energy loss. A different site for ultra high energy cosmic ray acceleration must be found.},
doi = {},
url = {https://www.osti.gov/biblio/6081815},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Apr 07 00:00:00 EST 1983},
month = {Thu Apr 07 00:00:00 EST 1983}
}