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2006 December 17 long duration flare observed with the hinode EUV Imaging Spectrometer

Hara, H; Watanabe, T; Matsuzaki, K; Harra, LK; Culhane, JL; Cargill, P; ... Doschek, GA; + view all (2008) 2006 December 17 long duration flare observed with the hinode EUV Imaging Spectrometer. PUBL ASTRON SOC JPN , 60 (2) 275 - 284.

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Abstract

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 Ca XVII emission line at 192.86 angstrom. 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 Ca XVII 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.

Type:Article
Title:2006 December 17 long duration flare observed with the hinode EUV Imaging Spectrometer
Keywords:Sun : corona, Sun : flares, X-RAY TELESCOPE, MAGNETIC RECONNECTION SITE, SOLAR-FLARES, ATOMIC DATABASE, EMISSION-LINES, LOOPS, MISSION, MODEL, DYNAMICS, CHIANTI
UCL classification:UCL > School of BEAMS > Faculty of Maths and Physical Sciences > Space and Climate Physics

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