Query : 2006A&A...449..641Z

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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Number of rows : 2
N Identifier Otype ICRS (J2000)
ICRS (J2000)
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
1 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 13083 0
2 NAME Sgr A* X 17 45 40.03599 -29 00 28.1699           ~ 3928 3

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