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STUDYING FREQUENCY RELATIONSHIPS OF KILOHERTZ QUASI-PERIODIC OSCILLATIONS FOR 4U 1636-53 AND Sco X-1: OBSERVATIONS CONFRONT THEORIES
Lin, YF; Boutelier, M; Barret, D; Zhang, SN; Zhang SN(张双南)
2011
发表期刊ASTROPHYSICAL JOURNAL
卷号726期号:2页码:74
通讯作者[Lin, Yong-Feng] Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China ; [Lin, Yong-Feng] Tsinghua Univ, Ctr Astrophys, Beijing 100084, Peoples R China ; [Lin, Yong-Feng ; Boutelier, Martin ; Barret, Didier] Univ Toulouse UPS, F-31062 Toulouse 9, France ; [Lin, Yong-Feng ; Boutelier, Martin ; Barret, Didier] Ctr Etud Spatiale Rayonnements, CNRS, UMR 5187, F-31028 Toulouse 4, France ; [Zhang, Shuang-Nan] Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, Beijing 100049, Peoples R China ; [Zhang, Shuang-Nan] Univ Alabama, Dept Phys, Huntsville, AL 35899 USA
摘要By fitting the frequencies of simultaneous lower and upper kilohertz quasi-periodic oscillations (kHz QPOs) in two prototype neutron star (NS) QPO sources (4U 1636-53 and Sco X-1), we test the predictive power of all currently proposed QPO models. Models predict a linear, power law, or other relationship between the two frequencies. We found that for plausible NS parameters (mass and angular momentum), no model can satisfactorily reproduce the data, leading to very large chi-square values in our fittings. For both 4U 1636-53 and Sco X-1, this is largely due to the fact that the data significantly differ from a linear relationship. Some models perform relatively better but still have their own problems. Such a detailed comparison of data from models enables identification of routes for improving those models further.
文章类型Article
关键词accretion, accretion disks stars: neutron X-rays: stars
学科领域Astronomy & Astrophysics
研究领域[WOS]Astronomy & Astrophysics
DOI10.1088/0004-637X/726/2/74
URL查看原文
语种英语
WOS类目Astronomy & Astrophysics
WOS记录号WOS:000285623600018
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被引频次:23[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/311005/240385
专题粒子天体物理中心
作者单位中国科学院高能物理研究所
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Lin, YF,Boutelier, M,Barret, D,et al. STUDYING FREQUENCY RELATIONSHIPS OF KILOHERTZ QUASI-PERIODIC OSCILLATIONS FOR 4U 1636-53 AND Sco X-1: OBSERVATIONS CONFRONT THEORIES[J]. ASTROPHYSICAL JOURNAL,2011,726(2):74.
APA Lin, YF,Boutelier, M,Barret, D,Zhang, SN,&张双南.(2011).STUDYING FREQUENCY RELATIONSHIPS OF KILOHERTZ QUASI-PERIODIC OSCILLATIONS FOR 4U 1636-53 AND Sco X-1: OBSERVATIONS CONFRONT THEORIES.ASTROPHYSICAL JOURNAL,726(2),74.
MLA Lin, YF,et al."STUDYING FREQUENCY RELATIONSHIPS OF KILOHERTZ QUASI-PERIODIC OSCILLATIONS FOR 4U 1636-53 AND Sco X-1: OBSERVATIONS CONFRONT THEORIES".ASTROPHYSICAL JOURNAL 726.2(2011):74.
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