Pseudo-spectral technique applied to numerical solutions for stellar collapse

Details Pseudo-spectral technique applied to numerical solutions for stellar collapse Pseudo-spectral technique applied to numerical solutions for stellar collapse

Aug 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...164..300b&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 164, no. 2, Aug. 1986, p. 300-309.

Computer Science

Numerical Analysis

15

Gravitational Collapse, Numerical Analysis, Stellar Evolution, Degrees Of Freedom, Hydrodynamics, Shock Waves, Stellar Mass Ejection, Supernovae

Scientific paper

A numerical solution of spherical gravitational collapse using pseudospectral methods is presented. It is shown that this technique makes it possible to obtain numerical results with a very high accuracy even if just a few degrees of freedom are used. In particular, it is shown how a strong shock wave may be described and how conservation laws are satisfied with high accuracy by the numerical solution. Numerical results illustrating these capacities in the case of a collapsing supernova core are presented.

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