| Gravitational wave radiation from close double white dwarfs in the Galaxy | |
Liu JZ(刘进忠)1,2 ; Liu, JZ (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, Kunming 650011, Peoples R China.
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| 发表期刊 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
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| 2009-12-21 | |
| 卷号 | 400期号:4页码:1850-1858 |
| DOI | 10.1111/j.1365-2966.2009.15574.x |
| 产权排序 | 第1完成单位 |
| 收录类别 | SCI |
| 关键词 | Gravitational Waves Binaries: Close Galaxy: Stellar Content |
| 摘要 | Close double white dwarfs (CDWDs) are believed to dominate the Galactic gravitational wave (GW) foreground radiation in the frequency range 10(-4) to 0.1 Hz, which will be detected by the Laser Interferometer Space Antenna (LISA). In this frequency range, the foreground radiation is predicted to be larger than both instrumental noise and the GW radiation from other sources, such as extragalactic low-mass X-ray binaries. We study the production of CDWDs using a binary population synthesis approach, and calculate their contribution to the Galactic GW foreground radiation. From a sample of 10(7) binaries, we select CDWD systems that would radiate at frequencies between 10(-8) and 10(-2) Hz. We calculate the evolutionary processes of the selected objects and conclude that the CDWD systems radiating at lower frequencies than 10(-3) Hz are LISA foreground sources, while those radiating at higher frequencies are possibly resolved sources. The CDWD systems which make up the LISA GW foreground are produced through three evolutionary channels: stable Roche lobe overflow (RLOF) plus common envelope (CE); CE plus CE; and exposed core plus CE, as proposed by Han (1998). We find that the resolved CDWDs are produced by the CE plus CE channel. We analyse the proportion of the resolved CDWDs that are compositionally double helium, or carbon-oxygen plus helium WD binary systems. |
| 项目资助者 | Natural Science Foundation of China [10521001, 2007CB815406] |
| 语种 | 英语 |
| 学科领域 | Astronomy & Astrophysics |
| 文章类型 | Article |
| ISSN | 0035-8711 |
| URL | 查看原文 |
| 归档日期 | 2009-12-09 |
| WOS记录号 | WOS:000272532100018 |
| WOS研究方向 | Astronomy & Astrophysics |
| WOS类目 | Astronomy & Astrophysics |
| 关键词[WOS] | BINARY STELLAR EVOLUTION ; MASS-RATIO DISTRIBUTION ; COMMON-ENVELOPE PHASE ; BLACK-HOLE BINARIES ; INITIAL MASS ; SPECTROSCOPIC BINARIES ; DOUBLE DEGENERATE ; COMPACT OBJECTS ; POINT MASSES ; STARS |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ynao.ac.cn/handle/114a53/4463 |
| 专题 | 大样本恒星演化研究组 |
| 通讯作者 | Liu, JZ (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, Kunming 650011, Peoples R China. |
| 作者单位 | 1.National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011, P.R. China 2.Graduate University of Chinese Academy of Sciences, Beijing 100039, P.R. China |
| 第一作者单位 | 中国科学院云南天文台 |
| 推荐引用方式 GB/T 7714 | Liu JZ,Liu, JZ . Gravitational wave radiation from close double white dwarfs in the Galaxy[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2009,400(4):1850-1858. |
| APA | Liu JZ,&Liu, JZ .(2009).Gravitational wave radiation from close double white dwarfs in the Galaxy.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,400(4),1850-1858. |
| MLA | Liu JZ,et al."Gravitational wave radiation from close double white dwarfs in the Galaxy".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 400.4(2009):1850-1858. |
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| Gravitational wave r（770KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | 浏览 请求全文 | |
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