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Author

M. Böttcher

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Open access Sep 2026

Evidence of a spectral steepening of the gamma-ray emission from the Galactic center ridge

Very high-energy (VHE) γ-ray emission detected from the central molecular zone (CMZ) hints at diffusive propagation of cosmic rays (CRs) injected continuously near the Galactic center (GC). Using H.E.S.S. VHE γ-ray observations, we aim to construct a multicomponent description of the region in order to derive the spati...

A. Acharyya, F. Aharonian, H. Ashkar et al. · 0 citations
Open access Sep 2026

Compton-induced HE – VHE γ-rays from pair cascade emissions in the SEDs of radio galaxies: NGC 1275

In the scheme of active galactic nuclei (AGNi), the blazar subclass is particularly bright in γ-rays. This is because of their emissions being beamed into our line of sight, as opposed to their misaligned parent population, radio galaxies. This work presents results of a Monte-Carlo code that propagates jet-collimate...

M. Ntshatsha, M. Böttcher, S. Razzaque · 0 citations

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