Rapid expansion of polytropes

Details Rapid expansion of polytropes Rapid expansion of polytropes

May 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...280..819b&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 280, May 15, 1984, p. 819-824.

Astronomy and Astrophysics

Astrophysics

4

Polytropic Processes, Stellar Mass Ejection, Stellar Models, Stellar Structure, Supermassive Stars, Gas Expansion, Hydrodynamics, Radiation Pressure, Similarity Theorem

Scientific paper

An extremely massive unevolved star may be idealized as an n = 3 polytropic sphere supported by radiation pressure. Such a polytrope is subject to explosive, supersonic expansion, whose later stages can be described by similarity solution of the dynamical equations. This picture is confirmed by numerical hydrodynamic simulation, which shows that an n = 3 polytrope, initially at rest near equilibrium, undergoes an explosive expansion which approaches the similarity solution at large times.

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