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Instability of Embedded Polytropes

Horedt, G.P. (2000) Instability of Embedded Polytropes. Publ. Astron. Soc. Japan, 52, pp. 217-221.

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Abstract

The equivalende of two stability criteria (decreasing pressure with increasing radius versus increasing central density with increasing mass) is shown analytically for spherical polytropes without background medium, and numerically for embedded ones. Previous results concerning the instability under external pressure of incomplete (truncated) polytropes within a uniform background medium are shown to be not true. The spherical incomplete embedded polytrope is stable/unstable for the same polytropic indices and for the same background densities as the corresponding compete embedded polytrope.

Document Type:Article
Additional Information: LIDO-Berichtsjahr=2000,
Title:Instability of Embedded Polytropes
Authors:
AuthorsInstitution or Email of Authors
Horedt, G.P.UNSPECIFIED
Date:2000
Journal or Publication Title:Publ. Astron. Soc. Japan
Refereed publication:Yes
In ISI Web of Science:Yes
Volume:52
Page Range:pp. 217-221
Status:Published
Keywords:instabilities – stars: interiors
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EW - Erforschung des Weltraums
DLR - Research area:Space
DLR - Program:W EW - Erforschung des Weltraums
DLR - Research theme (Project):UNSPECIFIED
Location: Berlin-Adlershof
Institutes and Institutions:Institut für Weltraumsensorik und Planetenerkundung
Deposited By: Susanne Pieth
Deposited On:16 Sep 2005
Last Modified:14 Jan 2010 18:36

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