Plasma dynamics at the very initial phases of flares
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Plasma motions at the initial phases of flares observed in the high resolution soft X-ray spectrometers are summarized. Blue-shifted components of highly ionized metal ions suggest a senario of chromospheric evaporation. A large line width before and during hard X-ray bursts results from a superposition of multiple directed plasma motions or a turbulent motion directly connected to the magnetic reconnection. A further study with an increased sensitivity of the detector should be necessary in the next solar activity maximum.
KeywordsFlare Initial Phase Solar Activity Line Width Activity Maximum
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