Magnetic field decay of magnetars in supernova remnants
文献类型：期刊论文
| 作者 | Gao, Z. F.1,2,3; Peng, Q. H.4; Wang, N.1,2; Yuan, J. P.1,2 |
| 刊名 | ASTROPHYSICS AND SPACE SCIENCE
 |
| 出版日期 | 2012-11-01 |
| 卷号 | 342期号:1页码:55-71 |
| 关键词 | Magnetar Electron capture rate Supernova remnant Superhigh magnetic field |
| ISSN号 | 0004-640X |
| 通讯作者 | Gao,ZF |
| 英文摘要 | In this paper, we modify our previous research carefully, and derive a new expression of electron energy density in superhigh magnetic fields. Based on our improved model, we re-compute the electron capture rates and the magnetic fields' evolutionary timescales t of magnetars. According to the calculated results, the superhigh magnetic fields may evolve on timescales similar to(10(6)-10(7)) yrs for common magnetars, and the maximum timescale of the field decay, ta parts per thousand 2.9507x10(6) yrs, corresponding to an initial internal magnetic field B (0)=3.0x10(15) G and an initial inner temperature T (0)=2.6x10(8) K. Motivated by the results of the neutron star-supernova remnant (SNR) association of Zhang and Xie (2011), we calculate the maximum B (0) of magnetar progenitors, B (max)similar to(2.0x10(14)-2.93x10(15)) G when T (0)=2.6x10(8) K. When T (0)similar to 2.75x10(8)-1.75x10(8) K, the maximum B (0) will also be in the range of similar to 10(14)-10(15) G, not exceeding the upper limit of magnetic field of a magnetar under our magnetar model. We also investigate the relationship between the spin-down ages of magnetars and the ages of their SNRs, and explain why all AXPs associated with SNRs look older than their real ages, whereas all SGRs associated with SNRs appear younger than they are. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | GAMMA-RAY REPEATERS ; X-RAY ; NEUTRON-STARS ; SPIN-DOWN ; SGR 1900+14 ; PULSAR SPIN ; EMISSION MODELS ; BRAKING INDEXES ; YOUNG PULSARS ; RADIO PULSARS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000309338600007 |
| 公开日期 | 2014-05-15 |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/10100]  |
| 专题 | 紫金山天文台_期刊（老文献） |
| 作者单位 | 1.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi Xinjiang 830011, Peoples R China 2.Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210008, Peoples R China 3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China 4.Nanjing Univ, Dept Astron, Nanjing 210093, Jiangsu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Gao, Z. F.,Peng, Q. H.,Wang, N.,et al. Magnetic field decay of magnetars in supernova remnants[J]. ASTROPHYSICS AND SPACE SCIENCE,2012,342(1):55-71. |
| APA | Gao, Z. F.,Peng, Q. H.,Wang, N.,&Yuan, J. P..(2012).Magnetic field decay of magnetars in supernova remnants.ASTROPHYSICS AND SPACE SCIENCE,342(1),55-71. |
| MLA | Gao, Z. F.,et al."Magnetic field decay of magnetars in supernova remnants".ASTROPHYSICS AND SPACE SCIENCE 342.1(2012):55-71. |
入库方式： OAI收割
来源：紫金山天文台
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