Constraints on kilohertz quasi-periodic oscillation models and stellar equations of state from SAX J1808.4-3658, Cyg X-2 and 4U 1820-30
Wang, DH; Chen, L; Zhang, CM; Lei, YJ; Qu, JL;屈进禄
刊名MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
2013
卷号435期号:4页码:3494-3499
关键词accretion accretion discs binaries: close stars: neutron X-rays: stars
学科分类Astronomy & Astrophysics
DOI10.1093/mnras/stt1539
英文摘要We test the relativistic precession model (RPM) and the magnetohydrodynamics Alfven wave oscillation model (AWOM) for the kilohertz (kHz) quasi-periodic oscillations (QPOs) from sources with measured neutron star (NS) masses and twin kHz QPO frequencies. For the RPM, the derived NS masses of Cyg X-2, SAX J1808.4-3658 and 4U 1820-30 are 1.96 +/- 0.10, 2.83 +/- 0.04 and 1.85 +/- 0.02 M-circle dot, respectively. These are, respectively, similar to 30, 100 and 40 per cent higher than the measured results 1.5 +/- 0.3, < 1.4 and 1.29(-0.07)(+0.19) M-circle dot. For the AWOM, where the free parameter of the model is the density of the star, we infer the NS radii to be around 10-20 km for the above three sources. Based on this, we can infer the matter compositions inside the NSs with the help of the equations of state. In particular, for SAX J1808.4-3658, the AWOM shows a lower mass density for its NS than those of the other known kHz QPO sources, with a radius range of 17-20 km, which excludes the strange quark matter inside its star.
收录类别SCI
WOS记录号WOS:000325774700058
引用统计
被引频次:8[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/224231
专题中国科学院高能物理研究所_粒子天体物理中心_期刊论文
推荐引用方式
GB/T 7714
Wang, DH,Chen, L,Zhang, CM,et al. Constraints on kilohertz quasi-periodic oscillation models and stellar equations of state from SAX J1808.4-3658, Cyg X-2 and 4U 1820-30[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2013,435(4):3494-3499.
APA Wang, DH,Chen, L,Zhang, CM,Lei, YJ,&Qu, JL;屈进禄.(2013).Constraints on kilohertz quasi-periodic oscillation models and stellar equations of state from SAX J1808.4-3658, Cyg X-2 and 4U 1820-30.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,435(4),3494-3499.
MLA Wang, DH,et al."Constraints on kilohertz quasi-periodic oscillation models and stellar equations of state from SAX J1808.4-3658, Cyg X-2 and 4U 1820-30".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 435.4(2013):3494-3499.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
7334.pdf(427KB)期刊论文作者接受稿开放获取CC BY-NC-SA浏览 请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Wang, DH]的文章
[Chen, L]的文章
[Zhang, CM]的文章
百度学术
百度学术中相似的文章
[Wang, DH]的文章
[Chen, L]的文章
[Zhang, CM]的文章
必应学术
必应学术中相似的文章
[Wang, DH]的文章
[Chen, L]的文章
[Zhang, CM]的文章
相关权益政策
暂无数据
收藏/分享
文件名: 7334.pdf
格式: Adobe PDF
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。