Felix Aharonian

TL;DR: X-ray observations of the core of the Perseus cluster reveal a remarkably quiescent atmosphere in which the gas has a line-of-sight velocity dispersion of 164 ± 10 kilometres per second in the region 30–60 kiloparsecs from the central nucleus, infering that a total cluster mass determined from hydrostatic equilibrium in a central region would require little correction for turbulent pressure.

TL;DR: In this paper, the authors provide a systematic numerical and analytical study of Klein-Nishina (KN) effects in the spectrum produced by a steady-state, non-thermal source where rapidly accelerated electrons cool by emitting synchrotron radiation and Compton up-scattering ambient photons produced outside the source.

TL;DR: In this article, the authors investigated the dynamics and multi-wavelength emission of the HST-1 region and showed that a very high energy γ-ray fluxes expected in a framework of the proposed scenario are consistent with the observed ones.

TL;DR: In this article, the spectral and morphological properties of the supernova remnant RX J1713.7-3946 were analyzed using the spectral cutoff energy of parent electrons in the cutoff region.

TL;DR: In this paper, a compelling similarity of the energy and radial distributions of multi-TeV cosmic rays extracted from observations of very-high-energy γ-rays towards the Galactic Centre and two prominent clusters of young massive stars, Cygnus O2 and Westerlund 1.