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H.E.S.S. constraints on Dark Matter annihilations towards the Sculptor and Carina Dwarf Galaxies
HESS Collaboration, A. Abramowski, F. Acero +192
The Sculptor and Carina Dwarf spheroidal galaxies were observed with the H.E.S.S. Cherenkov telescope array between January 2008 and December 2009. The data sets consist of a total…
Recurrent Activity in Active Galactic Nuclei
D. J. Saikia, M. Jamrozy
There has been a growing body of evidence to suggest that AGN activity, which is powered by mass accretion on to a supermasive black hole, could be episodic, although the range of…
Giant Radio Sources as a probe of the cosmological evolution of the IGM, II. The observational constraint for the model of the radio-jets propagation through the X-ray halo--IGM interface
E. Kuligowska, M. Jamrozy, D. Koziel-Wierzbowska +1
hree limited samples of high-redshift radio sources of FRII-type are used to constrain the dynamical model for the jets' propagation through the two-media environment: the X-ray em…