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Helical Structure in an Eruptive Prominence Related to a CME (SUMER, CDS, LASCO)

Published online by Cambridge University Press:  12 April 2016

T.A. Kucera ,
A.I. Poland ,
J.E. Wiik ,
B. Schmieder  and
G. Simnett
T.A. Kucera
Affiliation:
NASA/GSFC, Code 682, MD 20771, USA
A.I. Poland
Affiliation:
NASA/GSFC, Code 682, MD 20771, USA
J.E. Wiik
Affiliation:
Observatoire de Paris, 92195 Meudon Cedex, France
B. Schmieder
Affiliation:
Observatoire de Paris, 92195 Meudon Cedex, France
G. Simnett
Affiliation:
University of Birmingham, Birmingham B15 2 TT, UK

Abstract

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SOHO (SUMER/CDS) observed an eruptive prominence on May 1,1996, associated with a CME observed by LASCO. We investigate the physical conditions of this prominence in order to quantify velocity, temperature, and density. SUMER spectra in Si IV and O IV lines are used to obtain Doppler-shift images of the prominence. The prominence shows large-scale red and blueshifted regions, revealing a large helical structure with a global twist. In addition, fine structure analysis shows multiple components in the line profile, suggesting integration of many threads along the line-of-sight with a large dispersion of velocities (±50 km s−1).

Type
Birth and Death of Filaments
Information
International Astronomical Union Colloquium , Volume 167: New Perspectives on Solar Prominences , 1998 , pp. 318 - 321
Copyright
Copyright © Astronomical Society of the Pacific 1998

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