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Discovery of an Accretion-rate Independent Absolute RMS Amplitude of Millihertz Quasi-periodic Oscillations in 4U 1636-53

文献类型:期刊论文

AuthorLyu, Ming1; Méndez, Mariano2; Altamirano, D.3; Zhang GB(张国宝)4,5; Mancuso, G. C.3,6,7
SourceThe Astrophysical Journal
Issued Date2019-10-24
Volume885Issue:1
ISSN0004-637X
Keywordmethods: data analysis stars: neutron X-rays: binaries
DOI10.3847/1538-4357/ab44a6
Rank第4完成单位
English Abstract

We investigate the frequency and amplitude of the millihertz quasi-periodic oscillations (mHz QPOs) in the neutron-star low-mass X-ray binary 4U 1636–53 using Rossi X-ray Timing Explorer observations. We find that no mHz QPOs appear when the source is in the hard spectral state. We also find that there is no significant correlation between the frequency and the fractional RMS amplitude of the mHz QPOs. Notwithstanding, for the first time, we find that the absolute rms amplitude of the mHz QPOs is insensitive to the parameter S a , which measures the position of the source in the color–color diagram and is usually assumed to be an increasing function of mass accretion rate. This finding indicates that the transition from marginally stable burning to stable burning or unstable burning could happen very rapidly since, before the transition, the mHz QPOs do not gradually decay as the rate further changes.

Subject天文学 ; 天体物理学 ; 高能天体物理学
URL查看原文
Language英语
WOS IDIOP:0004-637X-885-1-AB44A6
PublisherThe American Astronomical Society
源URL[http://ir.ynao.ac.cn/handle/114a53/21438]  
Collection云南天文台_高能天体物理研究组
云南天文台_中国科学院天体结构与演化重点实验室
Affiliation1.Department of Physics, Xiangtan University, Xiangtan, Hunan 411105, People's Republic of China
2.Kapteyn Astronomical Institute, University of Groningen, P.O. Box 800, NL-9700 AV Groningen, The Netherlands
3.Physics & Astronomy, University of Southampton, Southampton, Hampshire SO17 1BJ, UK
4.Yunnan Observatories, Chinese Academy of Sciences (CAS), Kunming 650216, People's Republic of China
5.Key Laboratory for the Structure and Evolution of Celestial Objects, CAS, Kunming 650216, People's Republic of China
6.Instituto Argentino de Radioastronomía (CCT-La Plata, CONICET; CICPBA), C.C. No. 5, 1894 Villa Elisa, Argentina
7.Facultad de Ciencias Astronómicas y Geofísicas, Universidad Nacional de La Plata, Paseo del Bosque s/n, 1900 La Plata, Argentina
Recommended Citation
GB/T 7714
Lyu, Ming,Méndez, Mariano,Altamirano, D.,et al. Discovery of an Accretion-rate Independent Absolute RMS Amplitude of Millihertz Quasi-periodic Oscillations in 4U 1636-53[J]. The Astrophysical Journal,2019,885(1).
APA Lyu, Ming,Méndez, Mariano,Altamirano, D.,Zhang GB,&Mancuso, G. C..(2019).Discovery of an Accretion-rate Independent Absolute RMS Amplitude of Millihertz Quasi-periodic Oscillations in 4U 1636-53.The Astrophysical Journal,885(1).
MLA Lyu, Ming,et al."Discovery of an Accretion-rate Independent Absolute RMS Amplitude of Millihertz Quasi-periodic Oscillations in 4U 1636-53".The Astrophysical Journal 885.1(2019).

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来源:云南天文台

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