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Title:
Energy loss of relativistic electrons and positrons traversing cosmic matter
Authors:
Gould, R. J.
Affiliation:
AA(California, University, La Jolla, Calif.)
Publication:
Astrophysical Journal, vol. 196, Mar. 15, 1975, pt. 1, p. 689-694. Research supported by the Alfred P. Sloan Foundation; (ApJ Homepage)
Publication Date:
03/1975
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
Energy Dissipation, High Energy Electrons, Positrons, Relativistic Particles, Background Radiation, Bremsstrahlung, Electromagnetic Scattering, Electron-Positron Pairs, Intergalactic Media, Interstellar Magnetic Fields, Magnetic Fields, Relativity, Synchrotron Radiation, X Rays
DOI:
10.1086/153457
Bibliographic Code:
1975ApJ...196..689G

Abstract

Questions of adiabatic expansion are considered along with aspects of Compton scattering, bremsstrahlung, electronic excitation, synchrotron radiation, and electron-positron pair production. It is found that, unless the intergalactic magnetic field is very small, synchrotron radiation will dominate all other energy loss processes at ultrahigh electron and positron energies. The dependence of the loss rates on the cosmic epoch is also discussed.

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