Fast Rotation of Neutron Stars

Abstract

We show that for realistic equations of state of dense matter, the universal proportionality factor relating the maximum rotation rate of neutron stars due to mass-shedding limit to the mass and radius of maximum allowable mass configuration of non-rotating models results from a universal proportionality between masses and radii of static maximum-mass neutron stars and those of maximally rotating configurations. These empirical relations cannot be obtained in the slow rotation approximation.

12 pages, LateX, uses aaspp.sty file, figures (Postscript files) available from [email protected]; to be published in the Astrophysical Journal

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