D 2005

Radial pulsations and dynamical stability of spherically symmetric perfect fluid configurations in spacetimes with a nonzero cosmological constant

HLEDÍK, Stanislav and Zdeněk STUCHLÍK

Basic information

Original name

Radial pulsations and dynamical stability of spherically symmetric perfect fluid configurations in spacetimes with a nonzero cosmological constant

Authors

HLEDÍK, Stanislav and Zdeněk STUCHLÍK

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

Stať ve sborníku

Field of Study

10308 Astronomy

Confidentiality degree

není předmětem státního či obchodního tajemství

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

, MSM4781305903, sbornik

Tags

International impact

Links

MSM4781305903, plan (intention).
Změněno: 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.
Displayed: 25/12/2024 17:42