The Continuous Emission Spectrum of the Flare of 1989 July 5

The continuous emission spectra of Ha, HP and Hy wave bands of the solar flare of 1989 July 5 are given and analysed. Studies show that characteristics of spectra, time and configuration of the flare are similar to those of a white light flare and therefore the flare is very likely a white light one. The main results are as follows:1) The flare not only has the radiation at the line center of Hα, Hβ and Hγ, but also has the continuous background radiation, with the continuous radiation at the violet end being stronger than that at the red end and the radiation lasting for about 9 minutes.2) The line-of-sight velocities are smaller and decrease in the order of Hα, Hβ and Hγ.3) Most of the flare is located at the neutral line of the magnetic field and the flare kernel with the continuous emission lies within the penumbra of the great Sunspot near the neutral line.