Abstract:
Neutron star models with hyperon-mixed core are studied by a realistic approach to use the YN and the YY interactions consistent with hypernuclear data. From the compatibility of the theoretical maximum mass with the observed neutron star mass 1.44 M ⊙ of PSR1913+16, the necessity of some extra repulsion in hypernuclear systems, e.g., a repulsion from three-body force, is stressed. It is noted that the increase of baryon degrees of freedom to avoid the short-range repulsion effectively is an essential mechanism causing the Y-mixed phase.
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Received: 1 May 2001 / Accepted: 4 December 2001
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Takatsuka, T., Nishizaki, S. & Yamamoto, Y. Necessity of extra repulsion in hypernuclear systems: Suggestion from neutron stars. Eur Phys J A 13, 213–215 (2002). https://doi.org/10.1140/epja1339-35
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DOI: https://doi.org/10.1140/epja1339-35