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Employing phenomenological density-dependent critical temperatures of strong singlet-state proton pairing and of moderate triplet-state neutron pairing, we investigate the effects of rotochemical heating on the thermal evolution of superfluid neutron stars whose cores consist of npe matter with the Akmal-Pandharipande-Ravenhall equation of state. Since the star is not quite in the weak interaction equilibrium state during spin-down, the departure from the chemical equilibrium leads to the rotochemical heating in a rotating NS which will increase the stellar's temperature. Our calculations show that the rotochemical heating delays the cooling of superfluid neutron stars considerably and makes the previous classification of NS cooling ambiguous. What's more, our model is currently consistent with all the observational data, and in particular some middle-aged and cold NSs (PRS J0205+6449 in 3C 58, PRS J1357-6429, RX J007.0+7303 in CTA 1, Vela) can be better explained when taking into account rotochemical heating. 相似文献
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考虑夸克粒子间相互作用,研究了在准粒子近似下奇异夸克物质系统的热力学,发现由于热力学自洽的要求,需要在热力学势中额外增加一项.利用这一等效热力学讨论奇异夸克物质的物态方程及声速,得到了一个“软化”的物态,这与质量–密度相关模型是一致的.但准粒子描述模型能够显示介质效应对强相互作用耦合常数的依赖. 相似文献
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本文描述了一种对网络流式数据实时监控的搜索算法,应用有限自动机的原理.实现对任意长度数据流进行多关键字无回溯单遍匹配扫描,且加入概率计算,在一定程度上实现文本的简单模糊语义分析。该算法已被网络过滤软件使用,并有良好表现。 相似文献
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本文综述了中子星内部可能的退禁闭相变以及相结构和相变行为对中子星演化的影响.通过分析两化学势核物质相平衡条件下的解,指出中子星中可能存在混合强子-夸克物质相.讨论非静态中子星的r-模引力波辐射和热辐射,从中子星动力学过程探讨夸克物质存在于中子星内部可能的信号. 相似文献
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