| 模型参数对奇异星性质的影响 |
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| 引用本文： | 包特木尔巴根,宋太平,崔甲武,唐高娃.模型参数对奇异星性质的影响[J].物理学报,2011,60(12):122101-122101. |
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| 作者姓名： | 包特木尔巴根 宋太平 崔甲武 唐高娃 |
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| 作者单位： | 1. 南阳师范学院物理与电子工程学院,南阳 473061;
2. 南阳师范学院图书馆,南阳 473061 |
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| 基金项目： | 国家自然科学基金(批准号:10275029)、河南省自然科学基金(批准号:112300410187)和河南省教育厅自然科学研究计划(批准号:2008A140009)资助的课题. |
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| 摘 要： | 用有效质量口袋模型描述奇异夸克物质,研究了耦合常数和口袋常数的选取对奇异夸克物质的状态方程及奇异星性质的影响.结果表明,随着耦合常数和口袋常数的增大,奇异夸克物质的状态方程变软,相应的奇异星的引力质量和对应的半径均变小.当耦合常数从0.5增大到2.0时,奇异星的质量从1.43M⊙(M⊙=1.99×1030 kg)减小到1.25M⊙,相应的半径由8.3 km减小到7.7 km;当口袋常数B1/4由160 MeV增大到175 MeV时,奇异星的质量和半径分别由1.47M⊙和8.6 km减小到1.22M⊙和7.4 km.这说明奇异夸克物质及奇异星的性质明显依赖于模型参数的取值.
关键词：
模型参数
奇异星
状态方程
质量-半径关系
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| 关 键 词： | 模型参数 奇异星 状态方程 质量-半径关系 |
| 收稿时间： | 2011-03-18 |
Influence of model parameters on properties of strange stars |
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| Bao Tmurbagan,Song Tai-Ping,Cui Jia-Wu and Tang Gao-Wa.Influence of model parameters on properties of strange stars[J].Acta Physica Sinica,2011,60(12):122101-122101. |
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| Authors: | Bao Tmurbagan Song Tai-Ping Cui Jia-Wu and Tang Gao-Wa |
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| Institution: | College of Physics and Electronic Engineering, Nanyang Normal University, Nanyang 473061, China;College of Physics and Electronic Engineering, Nanyang Normal University, Nanyang 473061, China;College of Physics and Electronic Engineering, Nanyang Normal University, Nanyang 473061, China;Library of Nanyang Normal University, Nanyang 473061, China |
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| Abstract: | In this paper we mainly investigate,in the framework of effective mass bag model,how the coupling constant and the bag constant execute their effects on equations of state of strange quark matter,and on the properties of strange stars.Numerical results indicate that with the increase of strong coupling constant and bag constant,equations of state for strange quark matter turn softened,whereas gravitational mass and corresponding radius of strange stars become decreased.For instance the mass of the star decr... |
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| Keywords: | model parameters strange star equations of state mass-radius relations |
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