ar X iv : a st ro - p h / 99 10 53 6 v 1 2 9 O ct 1 99 9 Effect of intergalactic absorption in the TeV γ - ray spectrum of Mkn 501
نویسنده
چکیده
We discuss an effect of the intergalactic absorption of the TeV γ-rays in time-averaged spectrum of Mkn 501 measured by the HEGRA collaboration. Analysis of the spectral behavior, variability time scale and relevant calculations of TeV γ-ray emission allow to conclude the presence of a noticeable absorption of the TeV γ-rays in the Mkn 501 energy spectrum.
منابع مشابه
ar X iv : a st ro - p h / 99 04 05 7 v 1 5 A pr 1 99 9 Evidence for Intergalactic Absorption in the TeV Gamma - Ray Spectrum of Mkn 501
The recent HEGRA observations of the blazar Mkn 501 show strong curvature in the very high energy γ-ray spectrum. Applying the γ-ray opacity derived from an empirically based model of the intergalactic infrared background radiation field (IIRF), to these observations, we find that the intrinsic spectrum of this source is consistent with a power-law: dNγ/dE ∝ E −α with α = 2.00 ± 0.03 over the r...
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