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The applications of the MHD Alfven wave oscillation model for kHz quasi-periodic oscillations
Zhang, CM; Yin, HX; Zhao, YH; Chang, HK; Song, LM; Song LM(宋黎明)
2007
发表期刊ASTRONOMISCHE NACHRICHTEN
卷号328期号:6页码:491-498
通讯作者Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China ; Natl Tsing Hua Univ, Dept Phys, Hsinchu 30013, Taiwan ; Natl Tsing Hua Univ, Inst Astron, Hsinchu 30013, Taiwan ; Chinese Acad Sci, Inst High Energy Phys, Astron Inst, Beijing 100039, Peoples R China
文章类型Article
摘要In this paper, we improve the previous work on the MHD Alfven wave oscillation model for the neutron star (NS) kHz quasi-periodic oscillations (QPOs), and compare the model with the updated twin kHz QPO data. For the 17 NS X-ray sources with the simultaneously detected twin kHz QPO frequencies, the stellar mass M and radius R constraints are given by means of the derived parameter A in the model, which is associated with the averaged mass density of the star as < p > = 3M/(4 pi rR(3)) similar or equal to 2.4 x 10(14) (A/0.7)(2) g/cm(3), and we also compare the M-R constraints with the stellar equations of state. Moreover, we also discuss the theoretical maximum kHz QPO frequency and maximum twin peak separation, and some expectations on SAX J1808.4-3658 are mentioned, such as its highest kHz QPO frequency similar to 870 Hz, which is about 1.4-1.5 times less than those of the other known kHz QPO sources. The estimated magnetic fields for both Z sources (about Eddington accretion rate M(Edd)) and Atoll sources (similar to 1% M(Edd)) are approximately similar to 10(9) G and similar to 10(8) G, respectively. (c) 2007 WILEY-VCH Verlag GmbH & Co. KGaA, Wcinheim.
关键词accretion : accretion disks stars : neutron binaries : close X-rays : binaries X-rays : stars
学科领域Astronomy & Astrophysics
研究领域[WOS]Astronomy & Astrophysics ; Astronomy & Astrophysics
DOI10.1002/asna.200610750
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语种英语
研究领域[WOS]Astronomy & Astrophysics ; Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
WOS记录号WOS:000248364300003
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被引频次:7[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/311005/237704
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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Zhang, CM,Yin, HX,Zhao, YH,et al. The applications of the MHD Alfven wave oscillation model for kHz quasi-periodic oscillations[J]. ASTRONOMISCHE NACHRICHTEN,2007,328(6):491-498.
APA Zhang, CM,Yin, HX,Zhao, YH,Chang, HK,Song, LM,&宋黎明.(2007).The applications of the MHD Alfven wave oscillation model for kHz quasi-periodic oscillations.ASTRONOMISCHE NACHRICHTEN,328(6),491-498.
MLA Zhang, CM,et al."The applications of the MHD Alfven wave oscillation model for kHz quasi-periodic oscillations".ASTRONOMISCHE NACHRICHTEN 328.6(2007):491-498.
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