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Spectroscopic Signatures of a Flare Observed by SUMER Onboard SOHO

Published online by Cambridge University Press:  13 May 2016

I. E. Dammasch ,
W. Curdt ,
B. Kliem ,
B. N. Dwivedi  and
K. Wilhelm
I. E. Dammasch
Affiliation:
Max-Planck-Institut für Aeronomie, Katlenburg-Lindau, Germany
W. Curdt
Affiliation:
Max-Planck-Institut für Aeronomie, Katlenburg-Lindau, Germany
B. Kliem
Affiliation:
Astrophysikalisches Institut, Potsdam, Germany
B. N. Dwivedi
Affiliation:
Banaras Hindu University, Varanasi, India
K. Wilhelm
Affiliation:
Max-Planck-Institut für Aeronomie, Katlenburg-Lindau, Germany

Abstract

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We report on EUV observations of a solar limb flare obtained by the SUMER spectrometer. A time series was taken with fixed slit position and several spectral windows that covered a wide temperature range (104-107 K), preceded and followed by contextual raster scans in a He I line. During the time series, a C4.6 flare occurred in the region, also imaged in the EUV by SOHO/EIT and in soft X rays by YOHKOH/SXT. The temporal evolution seen in the SUMER spectra reveals a close spatial relationship and a correlated dynamical behaviour of the hot (T ≈ 107 K) and cool (T ≈ 104 K) material, which are difficult to reconcile with the notion (based on the Kopp-Pneuman flare model) that cool loops form at a lower height than the hot flare loops.

Type
Session III: Active Region Structure and Dynamics
Information
Symposium - International Astronomical Union , Volume 203: Recent Insights into the Physics of the Sun and Heliosphere: Highlights from Soho and Other Space Missions , 2001 , pp. 264 - 266
Copyright
Copyright © Astronomical Society of the Pacific 2001 

References

Kjeldseth-Moe, O., Brekke, P. 1998, Solar Phys., 182, 73.Google Scholar
Wilhelm, K., et al. 1995, Solar Phys., 162, 189.Google Scholar