日食前后太阳黑子磁场的观测及其应用

The Observations of Sunspot Magnetic Field around the Solar Eclipes and Their Applications

根据日环食射电联合观测研究的课题需要,用北京天文台高分辨率的太阳磁场望远镜,于1987年9月22、24日对太阳黑子的纵向磁场进行了观测,经过换算得到23日日食时有关黑子的磁场分布及其月掩情况。这些结果不但大为改善了有关射电源的光学证认,而且有助于进一步研究黑子上空缓变射电辐射的方向性,二维分布以及亮温度的极小点等特性,

To meet the requirement of a coordinate program on radio observations and researches of the solar ecleipse of Sept. 23, 1987, the longitudinal components of the photospheric magnetic fields of several sunspots were observed on Sept. 22 and 24, 1987, with Beijing Observatory Solar Magnetic Field Telescope at Huairou which provided a resolution of 0.7'× 0.5'. After a proper conversion, the longitudinal magnetic fields of these sunspots under the solar eclipse of Sep. 23, 1987 were obtained.These results not only improved the optical identifications of jradio local sources on the solar disk, but also are of great importance for studing the directivity, two dimensional distribution, and the minimum brightness temperature of slowly varying component of radio emissions above these solar sunspots.