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Nominated by the Astronomical Institute of Charles University of Prague as an outstanding Ph.D. thesis 2012
Presents a viable theoretical explanation for the observed configuration of young stars in the Galactic centre
Topic of great interest in contemporary astrophysics
In this PhD thesis, which was nominated for publication in this series by the Astronomical Institute at Charles University, Prague, the author investigates the orbital evolution of an initially thin stellar disc around a supermassive black hole, considering various perturbative sources of gravity. His findings, obtained by both direct numerical N-body modelling and using standard perturbation methods, offer a viable theoretical explanation for the observed configuration of young stars in the Galactic Centre. This marks a significant contribution to a topic of great interest in contemporary astrophysics. The author also shows in his thesis that a secular instability (m = 1 mode) may occur in the embedding spherical cluster of old stars. This increases the richness of possible evolution scenarios of the embedding cluster and may lead to effective feeding of supermassive black holes through tidal disruption of stars on extremely eccentric orbits.
Content Level »Research
Keywords »Dynamics of Star Clusters - Feeding of supermassive black holes - Galactic Center - Galactic Centre - Galactic Nucleus - Modelling Nuclear Star Clusters - Numerical N-body Modelling - Orbital Evolution of Star Clusters - Stellar Disc Around Supermassive Black Hole - Symmetries of Star Clusters