Instabilities in stiff stellar cores: The gravitational radiation reaction

Details Instabilities in stiff stellar cores: The gravitational radiation reaction Instabilities in stiff stellar cores: The gravitational radiation reaction

Jun 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aipc..523...51h&link_type=abstract

GRAVITATIONAL WAVES: Third Edoardo Amaldi Conference. AIP Conference Proceedings, Volume 523, pp. 51-54 (2000).

Computer Science

Wave Generation And Sources, Relativity And Gravitation, Stellar Structure, Interiors, Evolution, Nucleosynthesis, Ages

Scientific paper

Symmetry-breaking rotational instabilities may play a significant role in the dynamics of rapidly rotating compact objects. During the growth of such global non-axisymmetric instabilities, the external spacetime undergoes dynamical changes in response to the changing shape of the object and gravitational radiation is emitted. Using a three-dimensional Smoothed Particle Hydrodynamics code, the numerically generated gravitational wave signals of two pre-supernova stellar cores undergoing a dynamical instability will be compared. The first model assumes a purely Newtonian gravitational field, while the second model incorporates the General Relativistic ``back reaction'' into the hydrodynamical equations. .

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