Characteristics of the Magnetic Field of the Active Region of the Flare of 1989 July 5

In this paper, the magnetie field of the active region corresponding to the flare with the continuum emission, which erupted on July 5, 1989, is analysed. The results show that the magnetic intensity is stronger and the sunspot area is larger when the preceding sunspot appears, and the former is weaker and the latter is smaller when the following sunspot occurs. The neutral line between the two regions with opposite magnetic polarities is like the "V" letter in shape, three of the four flare cores are situated on either side of the neutral line, except that the other one is situated in the quiet background and the flare core with the most obvious continuous emission is situated at the point of intersection between the magnetic shear and extruding lines, where there is the maximum gradient of the magnetic field(0.52GS/km).