An eccentric binary millisecond pulsar in the galactic plane
文献类型：期刊论文
| 作者 | Champion, David J.1,2; Ransom, Scott M.3; Lazarus, Patrick1; Camilo, Fernando4; Bassa, Cees1; Kaspi, Victoria M.1; Nice, David J.5; Freire, Paulo C. C.6; Stairs, Ingrid H.7; van Leeuwen, Joeri8 |
| 刊名 | SCIENCE
 |
| 出版日期 | 2008-06-06 |
| 卷号 | 320期号:5881页码:1309-1312 |
| 英文摘要 | Binary pulsar systems are superb probes of stellar and binary evolution and the physics of extreme environments. In a survey with the Arecibo telescope, we have found PSR J1903+ 0327, a radio pulsar with a rotational period of 2.15 milliseconds in a highly eccentric ( e = 0.44) 95- day orbit around a solar mass ( M.) companion. Infrared observations identify a possible main- sequence companion star. Conventional binary stellar evolution models predict neither large orbital eccentricities nor main- sequence companions around millisecond pulsars. Alternative formation scenarios involve recycling a neutron star in a globular cluster, then ejecting it into the Galactic disk, or membership in a hierarchical triple system. A relativistic analysis of timing observations of the pulsar finds its mass to be 1.74 +/- 0.04 M. an unusually high value. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000256441100036 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/7345]  |
| 专题 | 国家天文台_射电天文研究部 |
| 作者单位 | 1.McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada 2.CSIRO, Australia Telescope Natl Facil, Epping, NSW 1710, Australia 3.Natl Radio Astron Observ, Charlottesville, VA 22903 USA 4.Columbia Univ, Columbia Astrophys Lab, New York, NY 10027 USA 5.Bryn Mawr Coll, Dept Phys, Bryn Mawr, PA 19010 USA 6.Natl Astron & Ionosphere Ctr, Arecibo Observ, Arecibo, PR 00612 USA 7.Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada 8.Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA 9.Univ Manchester, Jodrell Bank Observ, Macclesfield SK11 9DL, Cheshire, England 10.Cornell Univ, Dept Astron, Ithaca, NY 14853 USA |
| 推荐引用方式 GB/T 7714 | Champion, David J.,Ransom, Scott M.,Lazarus, Patrick,et al. An eccentric binary millisecond pulsar in the galactic plane[J]. SCIENCE,2008,320(5881):1309-1312. |
| APA | Champion, David J..,Ransom, Scott M..,Lazarus, Patrick.,Camilo, Fernando.,Bassa, Cees.,...&Vlemmings, Wouter.(2008).An eccentric binary millisecond pulsar in the galactic plane.SCIENCE,320(5881),1309-1312. |
| MLA | Champion, David J.,et al."An eccentric binary millisecond pulsar in the galactic plane".SCIENCE 320.5881(2008):1309-1312. |
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来源：国家天文台
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