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  4. Relativistic accretion onto compact objects
 
Zitierlink URN
https://nbn-resolving.de/urn:nbn:de:gbv:46-00106662-12

Relativistic accretion onto compact objects

Veröffentlichungsdatum
2018-07-10
Autoren
Efremov, Pavel  
Betreuer
Perlick, Volker  
Gutachter
Giulini, Domenico  
Zusammenfassung
The present PhD thesis summarises results on analytical accretion models obtained during my PhD studies in 2014a 2018. I present a new ansatz for specific angular momentum-angular velocity dependence for perfect fluid in circular motion around a Kerr black hole. With this ansatz new solutions for toroidal configurations were obtained. I discuss here in detail the dynamical properties of these configurations and results of their application as initial conditions for accretion simulations with 2-D HARM code. For the case of circular motion in the NUT spacetime I present my results on characteristic circular geodesics radii in it. These results are further used for modelling perfect fluid tori with constant specific angular momentum (Polish Doughnuts). Characteristic changes in the patterns of circular motion of perfect fluid due to presence of the NUT parameter are discussed. The last part of the work presents a pre-study of accretion of spinning particles/fluids onto Kerr black holes. I discuss our results on spin-induced advance in last stable orbits and its relevance for accretion models.
Schlagwörter
accretion disks

; 

black holes

; 

Polish Doughnuts

; 

perfect fluid tori
Institution
Universität Bremen  
Fachbereich
Fachbereich 01: Physik/Elektrotechnik (FB 01)  
Dokumenttyp
Dissertation
Zweitveröffentlichung
Nein
Sprache
Englisch
Dateien
Lade...
Vorschaubild
Name

00106662-1.pdf

Size

3 MB

Format

Adobe PDF

Checksum

(MD5):1655b543991a7d40320350551063722c

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