[27] Thus we considered events in the most flare-productive AR accompanied by powerful proton events.
[28] 1. All the ARs are characterized by the magnetic configuration of the d type.
[29] 2. Some general characteristics of AR are presented such as magnetic twist, unbalanced magnetic flux, strong penumbra magnetic field, spot motions with high velocities, and new magnetic field emerging into penumbra.
[30] 3. No relation between the power of proton events and intensity of X-ray flares is found, this fact in some way agreeing to the results of Uddin et al. [1990], who concluded that proton fluxes and the emission in the extreme X rays weakly correlate to each other. Uddin et al. [1990] analyzed the data on proton events with energies E >10 MeV which occurred within the period 1976-1986.
[31] 4. There is a series of observational data (intensification of emissions of some lines in the transition region during the impulsive phase of a flare and dependence of the character of interplanetary disturbances propagation on solar activity cycle) which do not fit the current models of solar flares.
[32] 5. Apparently, a complex approach to the consideration of all these events is needed. Comparison of other characteristics of proton fluxes (but not the fluxes with energy E > 10 MeV) and X-ray emission from solar flares can give a different answer to the question on correlation between proton and X-ray flares.
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