Line shifts observed by BCS/Yohkoh

Using the observational data of Bragg crystal spectromater on Yohkoh for the period from October, 1991 to the end of 1995, we have made a statistical study for the flares which show to be in a single loop or a single loop dominated in the SXT images. It is found that although the blue asymmetry is v...

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Veröffentlicht in:Advances in space research 1997-01, Vol.20 (12), p.2319-2322
Hauptverfasser: Gan, W.Q., Watanabe, T.
Format: Artikel
Sprache:eng
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Zusammenfassung:Using the observational data of Bragg crystal spectromater on Yohkoh for the period from October, 1991 to the end of 1995, we have made a statistical study for the flares which show to be in a single loop or a single loop dominated in the SXT images. It is found that although the blue asymmetry is very common during the impulsive phase, the number of events with great total blueshift is very small. It is also found that the blueshift for most flares appears at the early impulsive phase and is temporally correlated with the broadening of the line.
ISSN:0273-1177
1879-1948
DOI:10.1016/S0273-1177(97)01052-1