4 papers
On the Origin of the X-ray Emission in Heavily Obscured Compact Radio Sources
Dominika Ł. Król, Małgosia Sobolewska, Łukasz Stawarz +4
X-ray continuum emission of active galactic nuclei (AGNs) may be reflected by circumnuclear dusty tori, producing prominent fluorescence iron lines at X-ray frequencies. Here we di…
Accretion induced black hole spin up in magnetized collapsars
Agnieszka Janiuk, Dominika Król
We study the gravitational collapse and formation of the Kerr black hole from the rotating progenitor star. We follow the evolution of black hole spin, coupled with its increasing…
An Analysis of Soft X-ray Structures at Kiloparsec Distances from the Active Nucleus of Centaurus A Galaxy
Dominika Ł. Król, Volodymyr Marchenko, Michał Ostrowski +1
Here we re-analyze the archival {\it Chandra} data for the central parts of the Centaurus\,A radio galaxy, aiming for a systematic investigation of the X-ray emission associated wi…
Evolution of black hole mass and spin in collapsars
D. Ł. Król, A. Janiuk
We investigate the collapsar scenario for the long gamma ray bursts. The energetics % of explosions in the -ray band are consistent with the binding energy of a progenitor star.…