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To summarize we
have obtained some new results as listed here. In many cases we talked about
Coulomb collisions and weak diffusion. But using the relative spectral
variation fo the flux, we figured that it should have opposite energy
dependence than Coulomb collisions, the decay rate is explicable if we use a
very small loss cone angle, i.e. highly inhomogeneous loop.
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And so on. This
tells that some new aspect of the problem could be revealed when microwave
spectral and HXR spectral are analyzed in detail together.
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So we want to
close the argument. By far the model was self-consistent. But except one
parameter. We found that the gradual population is larger than that of
impulsive population. This is not possible under the traditional up-down
picture. But quite possible under the opposite case, I.e. down-up picture The small loop has both thick target and the
accelerator. This is quite a surprising result in HXR studies, but relatively
common in optical observations, nowadays. The number in the thick target was
higher than the trapped one—suggests alternative scenario, namely down-up
scenario. The right panel: SXT large loop, small loop retain the thick target
bremsstrahlung, Radio was just sensitive to this trapped electrons. HXR—again
one example to demonstrate the complementary nature. and This was one event
in which the spectral and spatial informations are combined to address the
electron transport problem and time-dependent injection.
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