A Large Glitch in the Crab Pulsar

查看全文 作　　者：[1]NaWang;Xin-[2]JiWu;等 机构地区：[1]DepartmentofAstronomy,PekingUniversity,Beijing100871;[2]UrumqiAstronomicalObservatory,NAO-CSA,Urumqi8300 出　　处：《Chinese Journal of Astronomy and Astrophysics》索引2001年第1卷第3期,共5页 基　　金：National Natural Science Foundation of China under No.10073001;the National Scaling-the-Heights Project on Fundamental Research 摘　　要：Using a new pulsar timing system at the 25-m radio telescope of Urumqi Astronomical Observatory, we have detected a large glitch in the Crab pulsar which occurred in 2000 July. The size of the gfitch is Av/v ~ 2.4 × 10-8, with a rela tive increment in frequency derivative Av/v ~ 5 × 10-3. The observing system is introduced and the observed properties of the glitch are discussed. 关 键 词：恒星 中子星 脉冲星 巨蟹座 自转突变