Springer Theses / Symmetries and Dynamics of Star Clusters
(Sprache: Englisch)
This thesis explores the orbital evolution of an initially thin stellar disc around a supermassive black hole. The results, obtained by both direct numerical N-body modelling and standard perturbation methods, explain the observed configuration of young stars.
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This thesis explores the orbital evolution of an initially thin stellar disc around a supermassive black hole. The results, obtained by both direct numerical N-body modelling and standard perturbation methods, explain the observed configuration of young stars.
Klappentext zu „Springer Theses / Symmetries and Dynamics of Star Clusters “
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.
Inhaltsverzeichnis zu „Springer Theses / Symmetries and Dynamics of Star Clusters “
Foreword.- Prerequisites.- Disc embedded in spherical cluster.- Coupling of near-Keplerian orbits.- Sagittarius A*.- Conclusions.
Autoren-Porträt von Jaroslav Haas
Dr. Jaroslav Haas has been awarded his PhD by the Astronomical Institute of Charles University, Prague in 2012.
Bibliographische Angaben
- Autor: Jaroslav Haas
- 2014, 2014, XVI, 79 Seiten, Maße: 16 x 24,1 cm, Gebunden, Englisch
- Verlag: Springer, Berlin
- ISBN-10: 3319036491
- ISBN-13: 9783319036496
- Erscheinungsdatum: 28.02.2014
Sprache:
Englisch
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