1. General Seminars

Strangeness in Neutron Stars

by Dr Juergen Schaffner-Bielich (Institut für Theoretische Physik)

Aula Conversi (LNF)

Aula Conversi


The core of neutron stars might harbor new exotic phases associated with strangeness.
Modern models of neutron star matter take into account medium modifications of hyperons rooting their model parameters to hypernuclear data.
Hyperons could then appear around twice normal nuclear matter density.
On the other hand, the high-density behaviour of the nuclear equation of state can be probed by relativistic heavy-ion collisions by means of measuring kaon production at subthreshold energies.
The recent pulsar mass measurement of a two solar mass neutron star gives strong constraints on the high-density equation of state. The implications for the presence of hyperons in neutron stars are discussed. Also the maximum possible neutron star mass as derived from heavy-iondata is compared to pulsar data.
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