Stability of strange stars (SS) derived from a realistic equation of state

Details Stability of strange stars (SS) derived from a realistic equation of state Stability of strange stars (SS) derived from a realistic equation of state

2002-08-20

arxiv.org/abs/astro-ph/0208366v1

Mod.Phys.Lett. A17 (2002) 1783-1796

Astronomy and Astrophysics

Astrophysics

16 pages including 5 figures. Accepted for publication in MPLA

Scientific paper

10.1142/S0217732302008101

A realistic equation of state (EOS) leads to realistic strange stars (ReSS) which are compact in the mass radius plot, close to the Schwarzchild limiting line (Dey et al 1998). Many of the observed stars fit in with this kind of compactness, irrespective of whether they are X-ray pulsars, bursters or soft $\gamma$ repeaters or even radio pulsars. We point out that a change in the radius of a star can be small or large, when its mass is increasing and this depends on the position of a particular star on the mass radius curve. We carry out a stability analysis against radial oscillations and compare with the EOS of other strange star (SS) models. We find that the ReSS is stable and an M-R region can be identified to that effect.

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