Astronomy and Astrophysics – Astrophysics
Scientific paper
2008-01-24
Nucl.Phys.A804:309-321,2008
Astronomy and Astrophysics
Astrophysics
19 pages, 2 figures, updated and extended version of astro-ph/0703113, accepted for publication in a special issue of Nuclear
Scientific paper
10.1016/j.nuclphysa.2008.01.005
The role of hypernuclear physics for the physics of neutron stars is delineated. Hypernuclear potentials in dense matter control the hyperon composition of dense neutron star matter. The three-body interactions of nucleons and hyperons determine the stiffness of the neutron star equation of state and thereby the maximum neutron star mass. Two-body hyperon-nucleon and hyperon-hyperon interactions give rise to hyperon pairing which exponentially suppresses cooling of neutron stars via the direct hyperon URCA processes. Non-mesonic weak reactions with hyperons in dense neutron star matter govern the gravitational wave emissions due to the r-mode instability of rotating neutron stars.
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