Nuclear Matter for compact stars and its properties

Details Nuclear Matter for compact stars and its properties Nuclear Matter for compact stars and its properties

2011-04-30

arxiv.org/abs/1105.0080v1

Proceedings of Science, 11th Symposium on Nuclei in the Cosmos - NIC XI July 19-23, 2010, PoS (NIC XI) 175

Physics

Nuclear Physics

Nuclear Theory

5 pages, 2 Figures

Scientific paper

A pure nucleonic equation of state (EoS) for beta equilibrated charge neutral neutron star (NS) matter is determined using density dependent effective NN interaction. This EoS is found to satisfy both the constraints from the observed mass-radius of neutron stars and flow data from heavy-ion collisions. Recent observations of the binary millisecond pulsar J1614-2230 by P. B. Demorest et al. [1] suggest that the masses lie within (1.97\pm 0.04) M_\odot (M_\odot, solar mass). Most EoS involving exotic matter, such as kaon condensates or hyperons, tend to predict maximum masses well below 2.0M_\odot and are therefore ruled out. We are able to reproduce the measured mass-radius relationship for rotating and static NS. We ensure that the star rotating not faster than the frequency limited by r-mode instability gives the maximum mass about 1.95M_\odot with radius about 10 kilometer.

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