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Effect of the symmetry energy on compact stars

Authors: Constana ProvidĂȘncia, Rafael Cavagnoli, Debora P Menezes, Prafulla K Panda

Ref.: J. Phys.: Conf. Ser. 342, 012008 (2012)

Abstract: The effect of the symmetry energy on the properties of compact stars is discussed. It is shown that, for stars with masses above 1 M ⊙, the radius of the star varies linearly with the symmetry energy slope L. The hyperon-meson couplings are chosen according to experimental values of the hyperon nuclear matter potentials, and possible uncertainties are considered. It is shown that a softer symmetry energy gives rise to stars with less hyperons and smaller radius. Hyperon-meson couplings may also have a strong effect on the mass of the star.

DOI: 10.1088/1742-6596/342/1/012008

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