Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008pasj...60..275h&link_type=abstract
Publications of the Astronomical Society of Japan, Vol.60, No.2, pp.275--284
Astronomy and Astrophysics
Astronomy
7
Sun: Corona, Sun: Flares
Scientific paper
A GOES C-class long-duration flare that occurred near the west limb on 2006 December 17 was observed with the Hinode EUV Imaging Spectrometer (EIS) in raster-scan observations. Cusp-shaped arcades are prominent in the spectroheliogram of the CaXVII emission line at 192.86Å. Spatial relationships between hot flare loops with a cusp apex and cool post flare loops with various temperatures are clearly shown in the EIS observations. We find an enhanced line broadening above the bright loop-top region in the CaXVII observation. The Doppler observations of cooling post flare loops with coronal temperatures show both downflows and upflows along the loops, and these are interpreted as a part of siphon flows. Enhanced nonthermal line broadenings are identified at the top of the post flare loops.
Cargill Peter
Culhane Leonard J.
Doschek George A.
Hara Hirohisa
Harra Louise K.
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