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Existence of slowly rotating bipolytropes with prolate cores
Language
en
Article de revue
This item was published in
Astronomy and Astrophysics - A&A. 2024-11, vol. 691, p. A276
EDP Sciences
English Abstract
We report the existence of hydrostatic equilibrium states for a composite body made of two rigidly rotating, homogeneous layers bounded by spheroidal surfaces, where the core has a prolate shape. These new configurations ...Read more >
We report the existence of hydrostatic equilibrium states for a composite body made of two rigidly rotating, homogeneous layers bounded by spheroidal surfaces, where the core has a prolate shape. These new configurations require an oblate envelope that spins faster than the core. No solution with a prolate envelope is found. For some parameters, the prolate core can even be at rest. Numerical experiments based on the self-consistent field method support this result in the case of heterogeneous layers with polytropic equations of state. The possible cancellation of the first gravitational moment, J2, is discussed.Read less <
English Keywords
gravitation
methods: analytical
planets and satellites: interiors
stars: interiors
stars: rotation
Origin
Hal imported
