Quark Deconfinement inside Compact Stars and Gamma Ray Bursts Inner Engine

Details Quark Deconfinement inside Compact Stars and Gamma Ray Bursts Inner Engine Quark Deconfinement inside Compact Stars and Gamma Ray Bursts Inner Engine

2006-08-10

arxiv.org/abs/astro-ph/0608224v1

Nucl.Phys.A782:418-425,2007

Astronomy and Astrophysics

Astrophysics

8 pages, 7 figures, Proceedings of "Fifth International Conference on Perspectives in Hadronic Physics", Trieste 2006

Scientific paper

10.1016/j.nuclphysa.2006.10.024

The temporal structure of Gamma Ray Bursts can be interpreted assuming as a inner engine a neutron star which undergoes a progressive compactification via production of strangeness (hyperons and kaons) and quarks. We will propose a tentative identification of various emission periods of the burst with specific structural changes of the star. Each of these modifications of the composition of the compact star takes place as a deflagration and not as a detonation, so the energy released in the transition goes mainly into heat and not into a mechanical wave. This is important in order to avoid an excessive baryonic contamination of the region surrounding the compact star. In this way a ultrarelativistic plasma of electron-positron pairs and of photons can be obtained, powering the Gamma Ray Burst.

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