KMS of Xinjiang Astronomical Observatory, CAS
| The Orbital Modulation for the Spectrum and Mass Accretion Rate in Circinus X-1 | |
Ding, Guoqiang1 ; Huang, Chunping1,2; Qu, Jinlu3
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| 2012 | |
| Source Publication | International Journal of Astronomy and Astrophysics
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| Volume | 2Issue:4Pages:256-265 |
| Contribution Rank | 1 |
| Abstract | Using the data from the Proportional Counter Array on board the Rossi X-Ray Timing Explorer satellite, we study the orbital modulation for the spectrum and mass accretion rate of Cir X-1 during its two orbital periods. We use a model consisting of a blackbody, a multicolor disk blackbody, and a line component to fit the spectrum and find that the spec-trum is obviously modulated by the orbital phase. It is shown that the disk accretion rate in Cir X-1 undergoes three states during the orbital period. At the periastron with orbital phase 0 - 0.1, the disk accretion rate is sup-Eddington, then from phase 0.1 to the apastron (phase 0.5) it decreases dramatically and becomes near-Eddington, and from the apastron to the next periastron (phase 1) the disk accretion rate approximates Eddington and tends to be steady. We ar-gue that the evolution of the disk accretion rate is attributed to the high orbital eccentricity of this source. The mass ac-cretion rate onto the neutron star is much less than that onto the inner disk, indicating significant outflows in this source. |
| Keyword | Accretion Disk Compact Object Neutron Star Individual (Circinus X-1) |
| Subtype | Journal Article |
| DOI | 10.4236/ijaa.2012.24033 |
| Indexed By | 其他 |
| Language | 英语 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/657 |
| Collection | 已撤销研究室/团组_高能天体物理研究团组 |
| Corresponding Author | Ding, Guoqiang |
| Affiliation | 1.Xinjiang Astronomical Observatory, Chinese Academy of Sciences, Urumqi, China 2.University of Chinese Academy of Sciences, Beijing, China 3.Key Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, China |
| First Author Affilication | Xinjiang Astronomical Observatory, Chinese Academy of Sciences |
| Corresponding Author Affilication | Xinjiang Astronomical Observatory, Chinese Academy of Sciences |
| Recommended Citation GB/T 7714 | Ding, Guoqiang,Huang, Chunping,Qu, Jinlu. The Orbital Modulation for the Spectrum and Mass Accretion Rate in Circinus X-1[J]. International Journal of Astronomy and Astrophysics,2012,2(4):256-265. |
| APA | Ding, Guoqiang,Huang, Chunping,&Qu, Jinlu.(2012).The Orbital Modulation for the Spectrum and Mass Accretion Rate in Circinus X-1.International Journal of Astronomy and Astrophysics,2(4),256-265. |
| MLA | Ding, Guoqiang,et al."The Orbital Modulation for the Spectrum and Mass Accretion Rate in Circinus X-1".International Journal of Astronomy and Astrophysics 2.4(2012):256-265. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| 2013丁国强——The Orbital（612KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-ND | View Application Full Text | |
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