Instability of the cometary plasma tail—the instability in a plasma sheet  

作　　者：Lin ZhongLiu Yue-HuaMa Jian-ChunShi 

机构地区：[1]PurpleMountainObservatory,ChineseAcademyofSciences,Nanjing210008,China [2]NationalAstronomicalObservatories,ChineseAcademyofSciences,Beijing100012,China

出　　处：《Research in Astronomy and Astrophysics》2011年第5期617-624,共8页天文和天体物理学研究（英文版）

基　　金：the support of the National Natural Science Foundation of China (NSFC,Grant Nos. 10573037,10778637,10933004 and 11003048);the Minor Planet Foundation of Purple Mountain Observatory and the exchange program between the Finnish Academy (FA) and NSFC

摘　　要：We consider the instability of the cometary plasma tail which is composed of a neutral sheet, two lobes of the ion tail and solar wind. The plasma is assumed to be highly conductive and incompressible. The unstable state yields a magnetic field which is perpendicular to the tail axis. Our result is consistent with findings about plasma from the International Cometary Explorer （ICE）.We consider the instability of the cometary plasma tail which is composed of a neutral sheet, two lobes of the ion tail and solar wind. The plasma is assumed to be highly conductive and incompressible. The unstable state yields a magnetic field which is perpendicular to the tail axis. Our result is consistent with findings about plasma from the International Cometary Explorer （ICE）.

关 键 词：methods： analytical-comets： general 

分 类 号：P352.4[天文地球—空间物理学] P185.81[天文地球—地球物理学]