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arXiv · 0805.4468

Strongly Blueshifted Phenomena Observed with {\it Hinode}/EIS in the 2006 December 13 Solar Flare

Ayumi Asai·Hirohisa Hara·Tetsuya Watanabe·Shinsuke Imada·Taro Sakao·Noriyuki Narukage·J. L. Culhane·G. A. Doschek
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Abstract

We present a detailed examination of strongly blueshifted emission lines observed with the EUV Imaging Spectrometer on board the {\it Hinode} satellite. We found two kinds of blueshifted phenomenon associated with the X3.4 flare that occurred on 2006 December 13. One was related to a plasmoid ejection seen in soft X-rays. It was very bright in all the lines used for the observations. The other was associated with the faint arc-shaped ejection seen in soft X-rays. The soft X-ray ejection is thought to be an MHD fast-mode shock wave. This is therefore the first spectroscopic observation of an MHD fast-mode shock wave associated with a flare.

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Ayumi Asai, Hirohisa Hara, Tetsuya Watanabe, Shinsuke Imada, Taro Sakao, Noriyuki Narukage, J. L. Culhane, G. A. Doschek. 2008-05-29. Strongly Blueshifted Phenomena Observed with {\it Hinode}/EIS in the 2006 December 13 Solar Flare. https://doi.org/10.1086/590419

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