Stability of neutron and boson stars: a new approach based on catastrophe theory

Details Stability of neutron and boson stars: a new approach based on catastrophe theory Stability of neutron and boson stars: a new approach based on catastrophe theory

Aug 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991phla..157..465k&link_type=abstract

Physics Letters A, Volume 157, Issue 8-9, p. 465-468.

Physics

35

Scientific paper

In the framework of general relativity, we investigate the stability of stars by classifying the singularities of smooth mappings. These maps arise from the functional dependence of the mass M and the particle number N of the star on its dynamical variables. Our new approach avoids the mathematical limitations of perturbation theory. In fact, it is capable of providing more information than perturbation theory and predicts novel oscillation and collapse regimes for a certain range of N. Moreover, our stability criteria are rather universal and apply to neutron stars as well as to boson stars.
Supported by the Deutsche Forschungsgemeinschaft, project He 528/14-1.

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