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arXiv 0705.4418astro-ph
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致密星中夸克相的形成及其与伽马射线暴的联系

Formation of Quark Phases in compact stars and their connection to Gamma-Ray-Bursts

A. Drago, G. Pagliara, J. Schaffner-Bielich

摘要:

我们分析了伽马射线暴(GRB)光变曲线时间结构中静止时间的出现。我们发现,如果一个长的静止时间是存在的,它是可能的划分为三个时期的伽玛暴的总持续时间:前宁静的发射,静止时间和后宁静的发射。然后,我们讨论了一个模型的伽玛暴内部引擎的基础上形成的夸克阶段在强子恒星的生命。在这个模型中,前宁静辐射被解释为由于强子星内部夸克的解除禁闭和2SC夸克物质的形成。静止后发射是由于2SC转化为颜色-味道-锁定(CFL)相。这两个过程之间的时间延迟与CFL相在2SC相中的成核时间有关,并且它可以与GRB光变曲线中观察到的静止时间相关联。讨论了紧凑星CFL核的稳定性。

英文摘要:

We analyse the occurrence of quiescent times in the temporal structure of the Gamma-Ray-Bursts (GRBs) light curves. We show that if a long quiescent time is present, it is possible to divide the total duration of GRBs into three periods: the pre-quiescence emission, the quiescent time and the post-quiescence emission. We then discuss a model of the GRBs inner engine based on the formation of quark phases during the life of an hadronic star. Within this model the pre-quiescence emission is interpreted as due to the deconfinement of quark inside an hadronic star and the formation of 2SC quark matter. The post-quiescence emission is due to the conversion of 2SC into the Color-Flavor-Locking (CFL) phase. The temporal delay between these two processes is connected with the nucleation time of the CFL phase in the 2SC phase and it can be associated with the observed quiescent times in the GRBs light curves. The stability of CFL cores in compact stars is also discussed.

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