18.06.02

To study of preflare plasma.
Short-wave increasing of polarization flux spectrum

•Fig. 11 Another example of preflare plasma manifestation in the form short-wave increasing of the spectra for AR 9415 in April 8, 2001 before powerfull flare X2.3 occured at 5h42m UT in April 10. Both effects (short-wave polarization inversion and increasing flux) are interpretated as manifestation of new magnetic flux rising with opposite and concide polarities with old magnetic field