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Solar Physics

, Volume 113, Issue 1–2, pp 107–120 | Cite as

Plasma dynamics at the very initial phases of flares

  • T. Watanabe
Article

Abstract

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.

Keywords

Flare Initial Phase Solar Activity Line Width Activity Maximum 

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Copyright information

© D. Reidel Publishing Company 1987

Authors and Affiliations

  • T. Watanabe
    • 1
  1. 1.Tokyo Astronomical ObservatoryTokyoJapan

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