Detailed Information on Publication Record
2005
Radial pulsations and dynamical stability of spherically symmetric perfect fluid configurations in spacetimes with a nonzero cosmological constant
HLEDÍK, Stanislav and Zdeněk STUCHLÍKBasic information
Original name
Radial pulsations and dynamical stability of spherically symmetric perfect fluid configurations in spacetimes with a nonzero cosmological constant
Authors
Edition
Opava, Proceedings of RAGtime 6/7: Workshops on black holes and neutron stars, p. 209-222, 13 pp. 2005
Publisher
Slezská univerzita v Opavě, Filozoficko-přírodovědecká fakulta, Ústav fyziky
Other information
Language
English
Type of outcome
Proceedings paper
Field of Study
10308 Astronomy
Confidentiality degree
is not subject to a state or trade secret
Organization unit
Faculty of Philosophy and Science in Opava
ISBN
80-7248-334-X
Keywords in English
spherically symmetric configurations, perfect fluid, radial pulsations, cosmological constant
Tags
Tags
International impact
Links
MSM4781305903, plan (intention).
Changed: 8/12/2020 13:35, Mgr. Pavlína Jalůvková
Abstract
V originále
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.