毫秒脉冲星的高能辐射  

The high-energy emission from millisecond pulsars

作　　者：方军[1] 戴本忠[1] 

机构地区：[1]云南大学物理系云南天体物理中心,云南昆明650091

出　　处：《云南大学学报（自然科学版）》2005年第6期480-484,498,共6页Journal of Yunnan University(Natural Sciences Edition)

基　　金：国家自然科学基金资助项目(10263001);云南大学校青年基金资助项目(2003Q029C)

摘　　要：根据自恰毫秒脉冲星磁层外隙模型讨论毫秒脉冲星的高能辐射机制.其中X射线由2个热成分和1个幂律成分组成,γ射线由外隙粒子同步-曲率辐射产生.在此基础上,理论计算了11颗X射线波段及其他39颗在射电波段观测到的毫秒脉冲星,所得理论与观测符合较好,表明该模型能较好地解释毫秒脉冲星的高能辐射机制.The significant progresses on both the theoretical and observational researches on millisecond pulsars （MSPs） have been obtained in recent years. The high-energy emission of MSPs is discussed. The backflow of charged particles from the outer gap produce the X-rays, which consist of two thermal components and one power-law component. The gamma-rays are produced in the outer gap through synchro - curvature radiation. Furthermore, the luminosities of 11 MSPs which have been observed in the X-ray band and 39 MSPs which have been observed ordy in the radio bandtemporarily are calculated. The theoretical results are good consistent with the observations.

关 键 词：毫秒脉冲星 高能辐射 X射线 

分 类 号：P145.6[天文地球—天体物理]