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Diffuse Continuum Gamma Rays From The Galaxy (2000)
| Venue: | ApJ |
| Citations: | 20 - 1 self |
BibTeX
@ARTICLE{Strong00diffusecontinuum,
author = {Andrew W. Strong and Igor V. Moskalenko and Olaf Reimer},
title = {Diffuse Continuum Gamma Rays From The Galaxy},
journal = {ApJ},
year = {2000},
volume = {537},
pages = {763--784}
}
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Abstract
A new study of the diffuse Galactic c-ray continuum radiation is presented, using a cosmic-ray propagation model which includes nucleons, antiprotons, electrons, positrons, and synchrotron radiation. Our treatment of the inverse Compton scattering includes the effect of anisotropic scattering in the Galactic interstellar radiation eld (ISRF) and a new evaluation of the ISRF itself. Models based on locally measured electron and nucleon spectra and synchrotron constraints are consistent with c-ray measurements in the 30500 MeV range, but outside this range excesses are apparent. A harder nucleon spectrum is considered but tting to c-rays causes it to violate limits from positrons and antiprotons. A harder interstellar electron spectrum allows the c-ray spectrum to be fitted above 1 GeV as well, and this can be further improved when combined with a modified nucleon spectrum which still respects the limits imposed by antiprotons and positrons. A large electron/inverse Compton halo is pr...
Keyphrases
diffuse continuum gamma ray nucleon spectrum cosmic-ray propagation model large electron inverse compton halo c-ray spectrum new study c-ray measurement synchrotron constraint synchrotron radiation harder nucleon spectrum inverse compton range excess mev range interstellar electron spectrum diffuse galactic c-ray continuum radiation galactic interstellar radiation eld new evaluation c-rays cause anisotropic scattering
