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2006A&A...449..641Z - Astronomy and Astrophysics, volume 449, 641-643 (2006/4-2)
Very high energy γ ray absorption by the galactic interstellar radiation field.
ZHANG J.-L., BI X.-J. and HU H.-B.
Abstract (from CDS):
We calculate the attenuation of very high energy γ rays from Galactic sources. A recent calculation of the Galactic interstellar radiation field shows that the infra-red radiation background near the Galactic Center is very intense. The attenuation of very high energy γ rays by this radiation is strong and occurs at lower energies than previously thought. Our result shows that the cutoff of the high energy γ ray spectrum begins at about 20TeV and reaches about 10% for 50TeV γ rays.
Abstract Copyright: ∼
Journal keyword(s): ISM: cosmic rays - infrared: ISM - gamma rays: observations
Simbad objects: 2
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