We study the effects of isovector-scalar ([Formula: see text])-meson on neutron and hyperon stars. Influence of [Formula: see text]-meson on both static and rotating stars is discussed. The [Formula: see text]-meson in a neutron star consisting of protons, neutrons and electrons, makes the equations of states (EOS) stiffer at higher density, and consequently increases the maximum mass of the star. But induction of [Formula: see text]-meson in the hyperon star decreases the maximum mass. This is due to the early evolution of hyperons in presence of [Formula: see text]-meson.
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Biswal et al. (2016) studied this question.
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