A Monte Carlo study of the evolution of the scale height of normal pulsars in the Galaxy
文献类型：期刊论文
| 作者 | Wei, YC ; Wu, XJ; Peng, QH; Wang, N; Zhang, J
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| 刊名 | CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS
 |
| 出版日期 | 2005 |
| 卷号 | 5期号:6页码:610-618 |
| ISSN号 | 1009-9271 |
| 关键词 | pulsar : general stars : evolution Galaxy : structure Galaxy : disk |
| 英文摘要 | Based on the undisturbed, finite thickness disk gravitational potential, we carried out 3-D Monte Carlo simulations of normal pulsars. We find that their scale height evolves in a similar way for different velocity dispersions (sigma(nu)): it first increases linearly with time, reaches a peak, then gradually decreases, and finally approaches a stable asymptotic value. The initial velocity dispersion has a very large influence on the scale height. The time evolution of the scale height is studied. When the magnetic decay age is used as the time variable, the observed scale height has a similar trend as the simulated results in the linear stage, from which we derive velocity dispersions in the range 70 similar to 178 km s(-1), which are near the statistical result of 90 similar to 270 km s(-1) for 92 pulsars with known transverse velocities. If the characteristic age is used as the time variable, then the observed and theoretical curves roughly agree for t > 10(8) yr only if sigma(nu) < 25 km s(-1). |
| 学科主题 | 致密天体、高能和基础物理 |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | RADIO PULSARS ; SUPERNOVA-REMNANTS ; POPULATION ; INCLINATION ; VELOCITIES ; MOTIONS |
| 资助信息 | 国家自然科学基金 |
| 收录类别 | SCI |
| 原文出处 | http://www.chjaa.org/ |
| 语种 | 英语 |
| WOS记录号 | WOS:000234124400007 |
| 公开日期 | 2013-03-06 |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/103]  |
| 专题 | 脉冲星研究团组 新疆天文台_其它 研究单元未命名 研究生 |
| 作者单位 | 1.Chinese Acad Sci, Natl Astron Observ, Urumqi Observ, Urumqi 830011, Peoples R China 2.Peking Univ, Dept Astron, Beijing 100871, Peoples R China 3.Nanjing Univ, Dept Astron, Nanjing 210093, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wei, YC,Wu, XJ,Peng, QH,et al. A Monte Carlo study of the evolution of the scale height of normal pulsars in the Galaxy[J]. CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,2005,5(6):610-618. |
| APA | Wei, YC,Wu, XJ,Peng, QH,Wang, N,&Zhang, J.(2005).A Monte Carlo study of the evolution of the scale height of normal pulsars in the Galaxy.CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,5(6),610-618. |
| MLA | Wei, YC,et al."A Monte Carlo study of the evolution of the scale height of normal pulsars in the Galaxy".CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS 5.6(2005):610-618. |
入库方式： OAI收割
来源：新疆天文台
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