Latest documents http://publikationen.ub.uni-frankfurt.de/index/index/ Tue, 22 Nov 2005 13:33:20 +0100 Tue, 22 Nov 2005 13:33:20 +0100 http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/3197 Recent progress in the understanding of the high density phase of neutron stars advances the view that a substantial fraction of the matter consists of hyperons. The possible impacts of a highly attractive interaction between hyperons on the properties of compact stars is investigated. We find that the equation of state exhibits a second stable minimum at large hyperon contents which is in accord with existing hypernuclear data. This second solution gives rise to new effects for neutron star properties which are similar to the ones proposed for the deconfinement transition to strange quark matter and absolutely stable strange stars. We find that the corresponding hyperstars can have rather small radii of R=6-8 km independent of the mass. PACS: 26.60+c, 21.65+f, 97.60.Gb, 97.60.Jd Jürgen Schaffner-Bielich; Matthias Hanauske; Horst Stöcker; Walter Greiner preprint http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/3197 Tue, 22 Nov 2005 13:33:20 +0100 http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/3196 Recent progress in the understanding of the high density phase of neutron stars advances the view that a substantial fraction of the matter consists of hyperons. The possible impacts of a highly attractive interaction between hyperons on the properties of compact stars are investigated. We find that a hadronic equation of state with hyperons allows for a first order phase transition to hyperonic matter. The corresponding hyperon stars can have rather small radii of R ~ 8 km. PACS: 26.60+c, 21.65+f, 97.60.Gb, 97.60.Jd Jürgen Schaffner-Bielich; Matthias Hanauske; Horst Stöcker; Walter Greiner preprint http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/3196 Tue, 22 Nov 2005 13:27:08 +0100 http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/3281 Recent progress in the understanding of the high density phase of neutron stars advances the view that a substantial fraction of the matter consists of hyperons. The possible impacts of a highly attractive interaction between hyperons on the properties of compact stars are investigated.We find that a hadronic equation of state with hyperons allows for a first order phase transition to hyperonic matter. The corresponding hyperon stars can have rather small radii of R 8 km. Jürgen Schaffner-Bielich; Matthias Hanauske; Horst Stöcker; Walter Greiner article http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/3281 Wed, 16 Nov 2005 11:25:22 +0100