Quark Deconfinement inside Compact Stars and Gamma Ray Bursts Inner Engine

Abstract

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.

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

References in corpus (10)

• Gamma-Ray Bursts
• Gamma Ray Bursts from delayed collapse of neutron stars to quark matter stars
• Phase Transition to Hyperon Matter in Neutron Stars
• Conversion of neutron stars to strange stars as an origin of gamma-ray bursts
• Precursor activity in bright long BATSE gamma-Ray Bursts
• Time Scales in Long GRBs
• Gamma-Ray Bursts from quark stars
• The phase diagram of neutral quark matter: The effect of neutrino trapping
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• A Possible Model for the Supernova/Gamma-Ray Burst Connection

Cited by in corpus (4)

• Hybrid stars within a covariant, nonlocal chiral quark model
• The quark core of protoneutron stars in the phase diagram of quark matter
• The birth of strange stars: kinetics, hydrodynamics and phenomenology of supernovae and GRBs
• Luminosity of a quark star undergoing torsional oscillations and the problem of gamma ray bursts