Spatial distribution of metal emissions in supernova remnant 3C 397 viewed with Chandra and XMM  

作　　者：JIANG Bing & CHEN Yang Department of Astronomy,Nanjing University,Nanjing 210093,China 

出　　处：《Science China(Physics,Mechanics & Astronomy)》2010年第S1期267-270,共4页中国科学：物理学、力学、天文学（英文版）

基　　金：support by the National Natural Science Foundation of China (Grant Nos. 10725312 and 10673003);the National Basic Research Program of China (Grant No. 2009CB824800)

摘　　要：We present X-ray equivalent width imaging of 3C 397 for Mg Heα,Si Heα,S Heα,and Fe Kα complex lines with Chandra and XMM-Newton observations.The images revealed that the heavier the element is,the smaller the extent of the element distribution is.The Mg emission is evidently enhanced in the southeastern blow-out region,well along the radio boundary there,and appears to partially envelope the eastern Fe knot.Two bilateral hat-like Si line-emitting structures are along the northern and southern borders,roughly symmetric with respect to the south-east-northwest elongation axis.An S line-emitting shell is located just inside the northern radio and IR shell,indicating a layer of reversely shocked sulphur in the ejecta.A few enhanced Fe features are basically aligned along the diagonal of the rectangular shape of the SNR,which implicates an early asymmetric SN explosion.We present X-ray equivalent width imaging of 3C 397 for Mg Heα,Si Heα,S Heα,and Fe Kα complex lines with Chandra and XMM-Newton observations.The images revealed that the heavier the element is,the smaller the extent of the element distribution is.The Mg emission is evidently enhanced in the southeastern blow-out region,well along the radio boundary there,and appears to partially envelope the eastern Fe knot.Two bilateral hat-like Si line-emitting structures are along the northern and southern borders,roughly symmetric with respect to the south-east-northwest elongation axis.An S line-emitting shell is located just inside the northern radio and IR shell,indicating a layer of reversely shocked sulphur in the ejecta.A few enhanced Fe features are basically aligned along the diagonal of the rectangular shape of the SNR,which implicates an early asymmetric SN explosion.

关 键 词：ISM 3C 397 G41.1-0.3 X-ray SUPERNOVA REMNANTS 

分 类 号：P145.3[天文地球—天体物理]