Supernovae as Nuclear and Particle Physics Laboratories

Détails

ID Serval
serval:BIB_1483B666553B
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Supernovae as Nuclear and Particle Physics Laboratories
Périodique
Nuclear Physics A
Auteur(s)
Liebendörfer M., Fischer T., Hempel M., Mezzacappa A., Pagliara G., Sagert I., Schaffner-Bielich J., Scheidegger S., Thielemann F.-K., Whitehouse S.C.
ISSN
0375-9474
Statut éditorial
Publié
Date de publication
08/2009
Peer-reviewed
Oui
Volume
827
Numéro
1-4
Pages
573c-578c
Langue
anglais
Résumé
In the interior of supernovae, temperatures and densities exceed the range that is easily accessible by terrestrial experiments. With the improving sensitivities of neutrino and gravitational wave detectors, the chance of obtaining observations providing a deep view into the heart of a close-by supernova explosion is steadily increasing. Based on computational models we investigate the imprint of the nuclear equation of state on the emission of neutrinos and gravitational waves. If a QCD phase transition to quark matter occurs during the immediate postbounce accretion phase, a strong second shock front is formed at a radius of order 10 km. Neutronised hadronic outer layers of the protoneutron star fall into it, are shock-heated and lead to a rapid acceleration of the second shock wave. As soon as this shock reduces the electron degeneracy at the neutrinospheres, a sharp second neutrino burst is emitted, dominated by electron antineutrinos. Together with the abruptly increasing mean energies of μ- and τ-neutrinos it may serve as a clear signature of the phase transition of the protoneutron star core to a more compact state.
Mots-clé
supernovae, general, neutrinos, gravitational waves, stars, neutron, equation of state, neutron star matter, Quark deconfinement, phase transition
Web of science
Création de la notice
06/11/2018 9:06
Dernière modification de la notice
20/08/2019 12:43
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