Origin of the diffuse galactic gamma-ray emission at low and medium gamma-ray energies |
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Authors: | W. Sacher V. Schönfelder |
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Affiliation: | 1. Max-Planck-Institut für Physik und Astrophysik, Institut für extraterrestrische Physik, 8046, Garching, Germany
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Abstract: | Recently the galactic plane has been observed in the low and medium energy gamma-ray range in the directions towards the center and anticenter. Spectral measurements are now available at those energies, where the contribution from π°-decay gamma rays can be neglected. The high MeV-fluxes observed in both parts of the Galaxy are an indication of either a strong electron induced component or a high contribution from unresolved sources. Several interstellar cosmic-ray electron spectra have been used to calculate the contribution from electron bremsstrahlung and inverse Compton collisions with optical, infrared and 2.7 K black-body photons. From these calculations restrictions on the interstellar electron spectrum are derived. |
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