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arXiv 1002.1658nucl-thastro-ph.HE
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致密星的奇异性

Strangeness in Compact Stars

J. Schaffner-Bielich

摘要:

我们讨论了奇怪的强子,特别是超子,对紧凑型恒星的总体特征和核心坍缩超新星的影响。超子很可能是第一个出现在中子星核内密度为正常核物质两倍的奇异粒子。它们的存在在很大程度上影响了致密星的质量-半径关系、最大质量、中子星的冷却、旋转动力中子星发射引力波的稳定性以及核心坍缩超新星中QCD相变的可能早期发生。我们还概述了在重离子碰撞中产生阈下K介子对中子星最大可能质量的限制。

英文摘要:

We discuss the impact of strange hadrons, in particular hyperons, on the gross features of compact stars and on core-collapse supernovae. Hyperons are likely to be the first exotic species which appears around twice normal nuclear matter density in the core of neutron stars. Their presence largely influences the mass-radius relation of compact stars, the maximum mass, the cooling of neutron stars, the stability with regard to the emission of gravitational waves from rotation-powered neutron stars and the possible early onset of the QCD phase transition in core-collapse supernovae. We outline also the constraints from subthreshold kaon production in heavy-ion collisions for the maximum possible mass of neutron stars.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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