User:Tohline/SSC/FreeEnergy/Equilibrium Sequence Instabilities
Instabilities Associated with Equilibrium Sequence Turning Points
The discussion presented here is supported by detailed reviews and new derivations presented in the following associated chapters:
- A free-energy synopsis.
- Material associated with an overarching PowerPoint presentation.
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Introduction
Bonnor-Ebert Sphere
Ebert (1955) and Bonnor (1956) are credited with constructing the first such models and, most significantly, discovering that, for any specified sound speed and applied external pressure, there is a mass above which no equilibrium configuration exists.
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Figure 1: Bonnor's P-V Diagram |
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Figure 2: Ebert's and Whitworth's P-R Diagrams |
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© 2014 - 2021 by Joel E. Tohline |