1997年3月9日的日冕偏振CCD观测  

Polarimetry of the Solar Corona at the 1997 March 9 Eclipse

作　　者：胡中为[1] 李汝谅[1] 方成[1] 萧耐园[1] 高修发 

机构地区：[1]南京大学天文系

出　　处：《天体物理学报》1999年第1期89-96,共8页

基　　金：国家自然科学基金;国家科委;中国科学院;南京大学

摘　　要：给出１９９７年３月９日日全食时所作的日冕偏振ＣＣＤ观测资料的处理结果，包括太阳赤道东西和两极等十二个方向的中冕（１．６－３．２Ｒ）绝对亮度分布和偏振度分布。During the total solar eclipse of 1997 March 9, polarimetric observation of the corona was made using a CCD camera with a polarizing plate NH 42 and a filter H8 at Mohe, Heilongjian province. A set of CCD coronal images and a series of weakened solar disk images with polarization position angles of 0°, 120°and 240°were processed with computer. The absolute brightness and polarization degree of the corona were obtained for the range 1.6-3.2 R . The corona was of the minimum type, but did not show east-west or south-north symmetry. Its outer part was brighter than, and the polarization degrees also differed from what one would expect from the van de Hulst model. This could be accounted for by the presence of irregular structure in portions some of the corona.

关 键 词：日食 日冕 偏振测量 CCD观测 

分 类 号：P125.11[天文地球—天体测量] P182.62[天文地球—天文学]