Difference between revisions of "User:Tohline/Apps/RotatingPolytropes"

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* [https://ui.adsabs.harvard.edu/abs/1924MNRAS..84..665V/abstract H. von Zeipel (1924)], MNRAS, 84, 665: ''The radiative equilibrium of a rotating system of gaseous masses
* [https://ui.adsabs.harvard.edu/abs/1924MNRAS..84..665V/abstract H. von Zeipel (1924)], MNRAS, 84, 665: ''The radiative equilibrium of a rotating system of gaseous masses
* [https://ui.adsabs.harvard.edu/abs/1924MNRAS..84..684V/abstract H. von Zeipel (1924)], MNRAS, 84, 684:  ''The radiative equilibrium of a slightly oblate rotating star''
* [https://ui.adsabs.harvard.edu/abs/1924MNRAS..84..684V/abstract H. von Zeipel (1924)], MNRAS, 84, 684:  ''The radiative equilibrium of a slightly oblate rotating star''
* [https://ui.adsabs.harvard.edu/abs/1933MNRAS..93..390C/abstract S. Chandrasekhar (1933)], MNRAS, 93, 390
* [https://ui.adsabs.harvard.edu/abs/1933MNRAS..93..390C/abstract S. Chandrasekhar (1933)], MNRAS, 93, 390:  ''The equilibrium of distorted polytropes.  I.  The rotational problem''
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<font color="green">If one ''assumes'' that the mass is distributed uniformly, the equilibrium configurations are the well-known Maclaurin spheroids.  This paper will be devoted to finding the oscillation frequencies of the Maclaurin spheroids.</font>
<font color="green">If one ''assumes'' that the mass is distributed uniformly, the equilibrium configurations are the well-known Maclaurin spheroids.  This paper will be devoted to finding the oscillation frequencies of the Maclaurin spheroids.</font>
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* [https://ui.adsabs.harvard.edu/abs/1963ApJ...137.1129R/abstract I. P. H. Roberts (1963)], ApJ, 137, 1129:  ''On Highly Rotating Polytropes''
* [https://ui.adsabs.harvard.edu/abs/1964ApJ...140..552J/abstract R. A. James (1964)], 140, 552
* [https://ui.adsabs.harvard.edu/abs/1964ApJ...140..552J/abstract R. A. James (1964)], 140, 552
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Revision as of 21:45, 16 June 2019

Rotationally Flattened Polytropes

Whitworth's (1981) Isothermal Free-Energy Surface
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Example Equilibrium Configurations

Reviews

Uniform Rotation

 

Apparently, only n = 3 polytropic configurations are considered.

 

The purpose of this paper is … to extend Emden's [work] to the case of rotating gas spheres which in their non-rotating states have polytropic distributions described by the so-called Emden functions. … the gas sphere is set rotating at a constant small angular velocity <math>~\omega</math>. … we shall assume that the rotation is so slow that the configurations are only slightly oblate.

 

If one assumes that the mass is distributed uniformly, the equilibrium configurations are the well-known Maclaurin spheroids. This paper will be devoted to finding the oscillation frequencies of the Maclaurin spheroids.

 

Structures have been determined for axially symmetric [uniformly] rotating gas masses, in the polytropic and white-dwarf cases … Physical parameters for the rotating configurations were obtained for values of n < 3, and for a range of white-dwarf configurations. The existence of forms of bifurcation of the axially symmetric series of equilibrium forms was also investigated. The white-dwarf series proved to lack such points of bifurcation, but they were found on the polytropic series for n < 0.808.

Differential Rotation

 

The oscillations of slowly rotating polytopes are treated in this paper. The initial equilibrium configurations are constructed as in Chandrasekhar (1933).

See Also


Whitworth's (1981) Isothermal Free-Energy Surface

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