Conservation of Momentum

  • Rudolf Kippenhahn
  • Alfred Weigert
Part of the Astronomy and Astrophysics Library book series (AAL)


Conservation of momentum provides the next basic differential equation of the stellar-structure problem. We will derive this in several steps of gradually increasing generality. The first assumes mechanical equilibrium (§2.1), the equation of motion for spherical symmetry follows in §2.4, while in §2.5 even the assumption of spherical symmetry is dropped. In §2.6 we briefly discuss general relativistic effects in the case of hydrostatic equilibrium.


Spherical Symmetry Mass Element Hydrostatic Equilibrium Gravitational Mass Gaseous Sphere 
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Copyright information

© Springer-Verlag Berlin Heidelberg 1990

Authors and Affiliations

  • Rudolf Kippenhahn
    • 1
  • Alfred Weigert
  1. 1.GöttingenGermany

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