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Tracing the Remnants of Powerful Quasars to Probe the IGM
Torsten A. Ensslin, Rashid A. Sunyaev, Markus Brueggen
Powerful quasars and radio galaxies are injecting large amounts of energy in the form of radio plasma into the inter-galactic medium (IGM). Once this nonthermal component of the IG…
Polarization of resonance X-ray lines from clusters of galaxies
S. Sazonov, E. Churazov, R. Sunyaev
As is known, resonant scattering can distort the surface-brightness profiles of clusters of galaxies in X-ray lines. We demonstrate that the scattered line emission should be polar…
Polarization of X-ray emission from the Sgr B2 cloud
E. Churazov, R. Sunyaev, S. Sazonov
The Sgr B2 giant molecular cloud is claimed to be an "X-ray reflection nebula" - the reprocessing site of a powerful flare of the Sgr A* source, occurred few hundred years ago. The…
Interstellar gas in the Galaxy and the X-ray luminosity of Sgr A* in the recent past
Conrad K. Cramphorn, Rashid A. Sunyaev
Information about the X-ray luminosity of the supermassive black hole located at the Galactic center (GC), Sgr A*, and its temporal variations in the past is imprinted in the scatt…
Synchrotron Self-Comptonized Emission of Low Energy Cosmic Ray Electrons in the Universe: I) Individual Sources
Torsten A. Ensslin, Rashid A. Sunyaev
Most of the Universe's populations of low energy cosmic ray electrons in the energy range of 1-100 MeV still manage to elude from detection by our instruments, since their synchrot…
Non-pulsing emission from X-ray pulsars
A. Lutovinov, S. Grebenev, R. Sunyaev
Results of GRANAT/ART-P observations of three X-ray pulsars in non-pulsing states are presented: 1) a statistically significant non-pulsing flux with a simple power-law spectrum wa…