Formation of quark phases in compact stars and SN explosion

Details Formation of quark phases in compact stars and SN explosion Formation of quark phases in compact stars and SN explosion

2008-09-02

arxiv.org/abs/0809.0518v1

Astronomy and Astrophysics

Astrophysics

9 pages, 3 figures, Proceedings "6th International Conference on Perspectives in Hadronic Physics", May 2008, Trieste

Scientific paper

10.1063/1.3013050

We describe possible scenarios of quark deconfinement in compact stars and we analyze their astrophysical implications. The quark deconfinement process can proceed rapidly, as a strong deflagration, releasing a huge amount of energy in a short time and generating an extra neutrino burst. If energy is transferred efficiently to the surface, like e.g. in the presence of convective instabilities, this burst could contribute to revitalize a partially failed SN explosion. We discuss how the neutrino observations from SN1987A would fit in this scenario. Finally, we focus on the fate of massive and rapidly rotating progenitors, discussing possible time separations between the moment of the core collapse and the moment of quark deconfinement. This mechanism can be at the basis of the interpretation of gamma ray bursts in which lines associated with heavy elements are present in the spectrum.

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