Pulsar rotation measures and the large-scale structure of the Galactic magnetic field
文献类型：期刊论文
| 作者 | Han, JL ; Manchester, RN; Lyne, AG; Qiao, GJ; van Straten, W
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| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2006-05-10 |
| 卷号 | 642期号:2页码:868-881 |
| 关键词 | galaxies : magnetic fields galaxy : structure ISM : magnetic fields pulsars : general |
| 英文摘要 | The large-scale magnetic field of our Galaxy can be probed in three dimensions using Faraday rotation of pulsar signals. We report on the determination of 223 rotation measures from polarization observations of relatively distant southern pulsars made using the Parkes radio telescope. Combined with previously published observations, these data give clear evidence for large-scale counterclockwise fields (viewed from the north Galactic pole) in the spiral arms interior to the Sun and weaker evidence for a counterclockwise field in the Perseus arm. However, in interarm regions, including the solar neighborhood, we present evidence that suggests that large-scale fields are clockwise. We propose that the large-scale Galactic magnetic field has a bisymmetric structure with reversals on the boundaries of the spiral arms. Streaming motions associated with spiral density waves can directly generate such a structure from an initial, inwardly directed radial field. Large-scale fields increase toward the Galactic center, with a mean value of about 2 mu G in the solar neighborhood and 4 mu G at a galactocentric radius of 3 kpc. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000237554200021 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/7126]  |
| 专题 | 国家天文台_射电天文研究部 |
| 作者单位 | 1.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 2.CSIRO, Australia Telescope Natl Facil, Epping, NSW 2121, Australia 3.Univ Manchester, Jodrell Bank Observ, Macclesfield SK11 9DL, Cheshire, England 4.Peking Univ, Dept Astron, Beijing 100871, Peoples R China 5.Univ Texas, Ctr Gravitat Wave Astron, Brownsville, TX 78520 USA |
| 推荐引用方式 GB/T 7714 | Han, JL,Manchester, RN,Lyne, AG,et al. Pulsar rotation measures and the large-scale structure of the Galactic magnetic field[J]. ASTROPHYSICAL JOURNAL,2006,642(2):868-881. |
| APA | Han, JL,Manchester, RN,Lyne, AG,Qiao, GJ,&van Straten, W.(2006).Pulsar rotation measures and the large-scale structure of the Galactic magnetic field.ASTROPHYSICAL JOURNAL,642(2),868-881. |
| MLA | Han, JL,et al."Pulsar rotation measures and the large-scale structure of the Galactic magnetic field".ASTROPHYSICAL JOURNAL 642.2(2006):868-881. |
入库方式： OAI收割
来源：国家天文台
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