Radial pulsations and dynamical stability of spherically symmetric perfect fluid configurations in ...

@inproceedings{43201,
   author = {Hledík, Stanislav and Stuchlík, Zdeněk},
   address = {Opava},
   booktitle = {Proceedings of RAGtime 6/7: Workshops on black holes and neutron stars},
   keywords = {spherically symmetric configurations, perfect fluid, radial pulsations, cosmological constant},
   language = {eng},
   location = {Opava},
   isbn = {80-7248-334-X},
   pages = {209-222},
   publisher = {Slezská univerzita v Opavě, Filozoficko-přírodovědecká fakulta, Ústav fyziky},
   title = {Radial pulsations and dynamical stability of spherically symmetric perfect fluid configurations in spacetimes with a nonzero cosmological constant},
   year = {2005}
}

TY  - JOUR
ID  - 43201
AU  - Hledík, Stanislav - Stuchlík, Zdeněk
PY  - 2005
TI  - Radial pulsations and dynamical stability of spherically symmetric perfect fluid configurations in spacetimes with a nonzero cosmological constant
PB  - Slezská univerzita v Opavě, Filozoficko-přírodovědecká fakulta, Ústav fyziky
CY  - Opava
SN  - 807248334X
KW  - spherically symmetric configurations, perfect fluid, radial pulsations, cosmological constant
N2  - The equation governing small radial oscillations and the related Sturm--Liouville eigenvalue equation for eigenmodes of the oscillations are determined for spherically symmetric configurations of perfect fluid in spacetimes with a nonzero cosmological constant. The Sturm--Liouville equation is then applied in the cases of spherically symmetric configurations with uniform distribution of energy density and polytropic spheres. It is shown that a repulsive cosmological constant rises the critical adiabaticindex and decreases the critical radius under which the dynamical instability occurs.
ER  - 

HLEDÍK, Stanislav a Zdeněk STUCHLÍK. Radial pulsations and dynamical stability of spherically symmetric perfect fluid configurations in spacetimes with a nonzero cosmological constant. In \textit{Proceedings of RAGtime 6/7: Workshops on black holes and neutron stars}. Opava: Slezská univerzita v Opavě, Filozoficko-přírodovědecká fakulta, Ústav fyziky, 2005, s.~209-222, 13 s. ISBN~80-7248-334-X.