高级检索

留言板

尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

姓名
邮箱
手机号码
标题
留言内容
验证码

原子核对称能对中子星壳层结构的影响

鲍世绍 胡金牛 张肇文 申虹

鲍世绍, 胡金牛, 张肇文, 申虹. 原子核对称能对中子星壳层结构的影响[J]. 原子核物理评论, 2017, 34(3): 387-391. doi: 10.11804/NuclPhysRev.32.03.387
引用本文: 鲍世绍, 胡金牛, 张肇文, 申虹. 原子核对称能对中子星壳层结构的影响[J]. 原子核物理评论, 2017, 34(3): 387-391. doi: 10.11804/NuclPhysRev.32.03.387
BAO Shishao, HU Jinniu, ZHANG Zhaowen, SHEN Hong. Influence of Nuclear Symmetry Energy on Neutron Star Crusts[J]. Nuclear Physics Review, 2017, 34(3): 387-391. doi: 10.11804/NuclPhysRev.32.03.387
Citation: BAO Shishao, HU Jinniu, ZHANG Zhaowen, SHEN Hong. Influence of Nuclear Symmetry Energy on Neutron Star Crusts[J]. Nuclear Physics Review, 2017, 34(3): 387-391. doi: 10.11804/NuclPhysRev.32.03.387

原子核对称能对中子星壳层结构的影响

doi: 10.11804/NuclPhysRev.32.03.387
基金项目: 国家自然科学基金资助项目(11375089,11405090,11675083)
详细信息
    作者简介:

    鲍世绍(1989-),男,山西长治人,博士研究生,从事原子核理论研究;E-mail:baoshishao@163.com

    通讯作者: 申虹,E-mail:songtc@nankai.edu.cn
  • 中图分类号: O571.53

Influence of Nuclear Symmetry Energy on Neutron Star Crusts

Funds: National Natural Science Foundation of China (11375089, 11405090, 11675083)
More Information
    Corresponding author: 10.11804/NuclPhysRev.32.03.387
  • 摘要: 中子星内壳层中存在原子核、中子、电子等非均匀分布的物质。在Wigner-Seitz近似下,共存相方法和自洽Thomas-Fermi近似方法是描述这种非均匀物质的有效方法。中子在非均匀物质所占的比例远远大于其他组分,因此原子核的对称能对非均匀物质的性质会产生十分重要的影响,而原子核对称能的密度依赖关系在核物质饱和密度附近有较大的不确定性。采用相对论平均场理论描述核子间相互作用,研究原子核对称能对中子星内壳层的密度范围、pasta相结构、壳核相变密度等性质的影响,探寻其中可能存在的关联。计算结果表明,原子核对称能及其密度依赖性在决定中子星内壳层非均匀物质的性质中起着重要作用,这与之前相关研究中得到的结论基本相符。


    Within Wigner-Seitz approximation, both the coexisting phases method and the self-consistent Thomas-Fermi approximation can be used to describe the nonuniform matter consisting of nuclei, neutrons, and electrons, which may coexist in the inner crust of neutron star. Since the neutron fraction is very large, nuclear symmetry energy may have an important impact on the properties of nonuniform matter. However, the density dependence of nuclear symmetry energy around saturation density is still rather uncertain. This paper focuses on the influence of nuclear symmetry energy on the density range of inner crust, pasta phase structure, and crust-core transition density of neutron star, where the relativistic mean field theory is adopted to describe the nucleon-nucleon interaction. It is turned out that the nuclear symmetry energy and its density dependence play an import role in determining the properties of nonuniform matter in the inner crust of neutron star, which is consistent with the former related studies.
  • [1] LATTIMER J M, PRAKASH M. Science, 2004, 304:536.
    [2] CHAMEL N, HAENSEL P. Living Rev Relativ, 2008, 11:10.
    [3] HEISELBERG H, HJORTH-JENSEN M. Phys Rep, 2000, 328:237.
    [4] LATTIMER J M, PRAKASH M. Phys Rep, 2007, 442:109.
    [5] STEINER A W. Phys Rev C, 2008, 77:035805.
    [6] RAVENHALL D G, PETHICK C J, WILSON J R. Phys Rev Lett, 1983, 50:2066.
    [7] GRILL F, PROVIDÊNICA C, AVANCINI S S. Phys Rev C, 2012, 85:055808.
    [8] OKAMOTO M, MARUYAMA T, YABANA K, et al. Phys Rev C, 2013, 88:025801.
    [9] AVANCINI S S, MENEZES D P, ALLOY M D, et al. Phys Rev C, 2008, 78:015802.
    [10] WATANABE G, ⅡDA K, SATO K. Nucl Phys A, 2000, 676:455.
    [11] BAO S S, SHEN H. Phys Rev C, 2014, 89:045807.
    [12] OYAMATSU K, ⅡDA K. Phys Rev, 2007, 75:015801.
    [13] AVANCINI S S, CHIACCHIERA S, MENEZES D P, et al. Phys Rev C, 2010, 82:055807; 2012, 85:059904(E).
    [14] LI B A, CHEN L W, KO C M. Phys Rep, 2008, 464:113.
    [15] HOROWITZ C J, PIEKAREWICZ J. Phys Rev Lett, 2001, 86:5647.
    [16] DUCOIN C, MARGUERON J, PROVIDÊNICA C. Euro-phys Lett, 2010, 91:32001.
    [17] ZHANG Z, CHEN L W. Phys Lett B, 2013, 726:234.
    [18] DUCOIN C, MARGUERON J, PROVIDÊNICA C, et al. Phys Rev C, 2011, 83:045810.
    [19] CAVAGNOLI R, MENEZES D P, PROVIDÊNICA C. Phys Rev C, 2011, 84:065810.
    [20] BAO S S, HU J N, ZHANG Z W, et al. Phys Rev C, 2014, 90:045082.
    [21] SUGAHARA Y, TOKI H. Nucl Phys A, 1994, 579:557.
    [22] FATTOYEV F J, HOROWITZ C J, PIEKAREWICZ J, et al. Phys Rev C, 2010, 82:055803.
    [23] MARUYAMA T, TATSUMI T, VOSKRESENSKY D N, et al. Phys Rev C, 2005, 72:015802.
    [24] FANTINA A F, CHAMEL N, MUTAFCHIEVA Y D, et al. Phys Rev C, 2016, 93:015801.
  • 加载中
计量
  • 文章访问数:  1690
  • HTML全文浏览量:  171
  • PDF下载量:  198
  • 被引次数: 0
出版历程
  • 收稿日期:  2016-11-10
  • 修回日期:  2016-12-19
  • 刊出日期:  2017-07-18

原子核对称能对中子星壳层结构的影响

doi: 10.11804/NuclPhysRev.32.03.387
    基金项目:  国家自然科学基金资助项目(11375089,11405090,11675083)
    作者简介:

    鲍世绍(1989-),男,山西长治人,博士研究生,从事原子核理论研究;E-mail:baoshishao@163.com

    通讯作者: 申虹,E-mail:songtc@nankai.edu.cn
  • 中图分类号: O571.53

摘要: 中子星内壳层中存在原子核、中子、电子等非均匀分布的物质。在Wigner-Seitz近似下,共存相方法和自洽Thomas-Fermi近似方法是描述这种非均匀物质的有效方法。中子在非均匀物质所占的比例远远大于其他组分,因此原子核的对称能对非均匀物质的性质会产生十分重要的影响,而原子核对称能的密度依赖关系在核物质饱和密度附近有较大的不确定性。采用相对论平均场理论描述核子间相互作用,研究原子核对称能对中子星内壳层的密度范围、pasta相结构、壳核相变密度等性质的影响,探寻其中可能存在的关联。计算结果表明,原子核对称能及其密度依赖性在决定中子星内壳层非均匀物质的性质中起着重要作用,这与之前相关研究中得到的结论基本相符。


Within Wigner-Seitz approximation, both the coexisting phases method and the self-consistent Thomas-Fermi approximation can be used to describe the nonuniform matter consisting of nuclei, neutrons, and electrons, which may coexist in the inner crust of neutron star. Since the neutron fraction is very large, nuclear symmetry energy may have an important impact on the properties of nonuniform matter. However, the density dependence of nuclear symmetry energy around saturation density is still rather uncertain. This paper focuses on the influence of nuclear symmetry energy on the density range of inner crust, pasta phase structure, and crust-core transition density of neutron star, where the relativistic mean field theory is adopted to describe the nucleon-nucleon interaction. It is turned out that the nuclear symmetry energy and its density dependence play an import role in determining the properties of nonuniform matter in the inner crust of neutron star, which is consistent with the former related studies.

English Abstract

鲍世绍, 胡金牛, 张肇文, 申虹. 原子核对称能对中子星壳层结构的影响[J]. 原子核物理评论, 2017, 34(3): 387-391. doi: 10.11804/NuclPhysRev.32.03.387
引用本文: 鲍世绍, 胡金牛, 张肇文, 申虹. 原子核对称能对中子星壳层结构的影响[J]. 原子核物理评论, 2017, 34(3): 387-391. doi: 10.11804/NuclPhysRev.32.03.387
BAO Shishao, HU Jinniu, ZHANG Zhaowen, SHEN Hong. Influence of Nuclear Symmetry Energy on Neutron Star Crusts[J]. Nuclear Physics Review, 2017, 34(3): 387-391. doi: 10.11804/NuclPhysRev.32.03.387
Citation: BAO Shishao, HU Jinniu, ZHANG Zhaowen, SHEN Hong. Influence of Nuclear Symmetry Energy on Neutron Star Crusts[J]. Nuclear Physics Review, 2017, 34(3): 387-391. doi: 10.11804/NuclPhysRev.32.03.387
参考文献 (24)

目录

    /

    返回文章
    返回