Neutron stars in the multidimensional einstein theory of gravitation

Details Neutron stars in the multidimensional einstein theory of gravitation Neutron stars in the multidimensional einstein theory of gravitation

Oct 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996ap.....39..359b&link_type=abstract

Astrophysics, Volume 39, Issue 4, pp.359-369

Astronomy and Astrophysics

Astrophysics

1

Scientific paper

The radius, mass, total number of baryons, and other parameters of static, spherically symmetric, superdense stars are calculated. A model with one Ricci-flat inner space of arbitrary dimensionality and the approximation p1=-0.5ɛ + ap for additional components of the energy — momentum tensor are used (ɛ and ρ are the total energy density and the pressure of the stellar matter and a is a fitting parameter). In the case of white dwarfs, the results of the multidimensional theory do not depend on the dimensionality D of space-time for -10 ≲ a ≲ 10 and coincide with the analogous data of the general theory of relativity (GTR). For neutron stars there is a dependence on D and a. For D>4, in particular, the greatest mass Mmax of a neutron star as a function of a has a maximum at 3

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