Slapové trhání v blízkosti černých děr v aktivních galaxiích

Štolc, Marcel

In this thesis we studied tidal disruptions of stars in the vicinity of com- pact objects and performed spectral re-analysis of XMMSL1 J074008.2-853927, one of the most prominent candidates of tidal disruption events (TDE) around super-massive black holes. This particular TDE shows signs of thermal and non- thermal radiation component and is also indicating the energy excess correspond- ing to the iron line emission of Fe Kα line. We analysed X-ray spectra from two XMM-Newton observations - from the 30-th of April 2014 and the 12-th of Jan- uary 2015 that were follow-up observations after the discovery of this TDE. We confirmed the possible thermal and non-thermal profile of radiation and the pres- ence of Fe Kα line in the data of the first XMM-Newton follow-up observation. We studied in detail the parameters of the iron line, which cannot be to tightly constrained due to insufficient quality of data. However, we also showed that in case of modelling the excess in lower energy band with relativistic reflection the parameters can be constrained. 1

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