Statistics and Evolution of Pulsars鈥?Parameters

详细信息	查看全文 | 推荐本文 |

• 作者：Yan Cai¹ ; ² ; ^{caiyan@lamost.org} ; Taani Ali¹ ; ² ; Yong-heng Zhao¹ ; Cheng-min Zhang¹
• 关键词：pulsars ; general&ndash ; stars ; statistics&ndash ; X-rays ; binaries
• 刊名：Chinese Astronomy and Astrophysics
• 出版年：2012
• 期刊代码：8_02751062
• 类别：ph
• 出版时间：April-June, 2012
• 卷：36
• 期：2
• 页码：137-147
• 文件大小：360 K

摘要

The rotation periods, surface magnetic field strengths, as well as the spatial distribution of the several kinds of pulsars discovered sofar are analyzed statistically. It is revealed that the spatial distribution of the millisecond pulsars is more dispersive than that of the normal radio pulsars. And that the spatial distribution of the pulsars in low-mass X-ray binaries (LMXBs) is also more dispersive than that of the pulsars in high-mass X-ray binaries (HMXBs). The distribution of rotation periods of the isolated millisecond pulsars has a peak at 4.7ms, and the corresponding peak values for the normal radio pulsars and the millisecond pulsars in binaries are 0.6 s and 3.5ms, respectively. The surface magnetic field strengths of the FERMI pulsars (the gamma-ray pulsars observed by the Large Area Telescope/Fermi Gamma-ray Space Telescope) and normal pulsars are all concentrated around 1012 Gs. It is found also that some young high-energy pulsars are associated with supernova remnants. In combination with the formation and evolution models of pulsars, we have made some remarks on the characteristics of these distributions.