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On axisymmetric and stationary solutions of the self-gravitating Vlasov system

Ellery Ames (Institutionen för matematiska vetenskaper) ; Håkan Andréasson (Institutionen för matematiska vetenskaper, matematik) ; Anders Logg (Institutionen för matematiska vetenskaper, matematik)
Classical and Quantum Gravity (0264-9381). Vol. 33 (2016), 15, p. no. 155008.
[Artikel, refereegranskad vetenskaplig]

Axisymmetric and stationary solutions are constructed to the Einstein-Vlasov and Vlasov-Poisson systems. These solutions are constructed numerically, using finite element methods and a fixed-point iteration in which the total mass is fixed at each step. A variety of axisymmetric stationary solutions are exhibited, including solutions with toroidal, disk-like, spindle-like, and composite spatial density configurations, as are solutions with non-vanishing net angular momentum. In the case of toroidal solutions, we show for the first time, solutions of the Einstein-Vlasov system which contain ergoregions.

Nyckelord: Einstein-Vlasov, Vlasov-Poisson, axisymmetric stationary solutions, ergoregion, relativistic stellar-systems, general-relativity, spindle singularities, models, galaxies, spacetimes, stability, existence, rotation, matter, Astronomy & Astrophysics, Physics



Denna post skapades 2016-08-11. Senast ändrad 2016-08-26.
CPL Pubid: 240158

 

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Institutioner (Chalmers)

Institutionen för matematiska vetenskaperInstitutionen för matematiska vetenskaper (GU)
Institutionen för matematiska vetenskaper, matematik (2005-2016)

Ämnesområden

Astronomi, astrofysik och kosmologi

Chalmers infrastruktur