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We study the properties of non-rotating and rotating neutron stars for a newset of equations of state (EOSs) with different high density behaviour obtainedusing the extended field theoretical model. The high density behaviour forthese EOSs are varied by varying the $\omega-$meson self-coupling andhyperon-meson couplings in such a way that the quality of fit to the bulknuclear observables, nuclear matter incompressibility coefficient andhyperon-nucleon potential depths remain practically unaffected. We find thatthe largest value for maximum mass for the non-rotating neutron star is$2.1M_\odot$. The radius for the neutron star with canonical mass is $12.8 -14.1$ km provided only those EOSs are considered for which maximum mass islarger than $1.6M_\odot$ as it is the lower bound on the maximum mass measuredso far. Our results for the very recently discovered fastest rotating neutronstar indicate that this star is supra massive with mass $1.7 - 2.7M_\odot$ andcircumferential equatorial radius $12 - 19$ km.

Non-rotating and rotating neutron stars in the extended field theoretical model