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HK: Physik der Hadronen und Kerne

HK 51: Kern- und Teilchen-Astrophysik

HK 51.2: Talk

Thursday, March 23, 2006, 17:15–17:30, E

Asymmetric neutrino emission in quark matter and pulsar kicks — •Irina Sagert and Jürgen Schaffner-Bielich — Institut für Theoretische Physik, Johann Wolfgang Goethe-Universität, Max-von-Laue-Straße 1, 60438 Frankfurt am Main, Germany

The direct Urca process in quark matter is tested for asymmetric neutrino emission due to a strong magnetic field. The results are applied to neutron stars with quark cores. To create a possible propulsion mechanism for the neutron stars due to the asymmetric neutrino emission we give constaints on the neutron star’s temperature, magnetic field strength and electron chemical potential by considering fully spin-polarized electrons and neutrino mean free paths.