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LASCO and EIT Observations of the Dynamic Corona

Published online by Cambridge University Press:  14 August 2015

K. P. Dere  and
G. E. Brueckner
K. P. Dere
Affiliation:
Naval Research Laboratory, Code 7660 Washington DC 20375
G. E. Brueckner
Affiliation:
Naval Research Laboratory, Code 7660 Washington DC 20375

Extract

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The combined operations of the Large Angle Spectrometric Coronagraph (LASCO) and the Extreme Ultraviolet Imaging Telescope (EIT) on the Solar and Heliospheric Observatory (SOHO), launched in December 1995, have provided an unprecedented opportunity for observing essentially all coronal phenomena that are not hidden behind the disk of the Sun. Consequently, observations with these instrument are providing information on coronal mass ejections (CMEs) from their initiation through their development over 30 ⊙. They reveal a coronal that never reaches a steady state. The corona is the site of continuous, time-dependent outflows, both within the coronal holes and the high speed streams and in the streamer belts and their mid-latitude sources. The spatial scales of these outflows range from 10s of arc-seconds through about a solar radius in large CMEs.

Type
II. Joint Discussions
Information
Highlights of Astronomy , Volume 11 , Issue 2: Highlights of Astronomy. As presented at the XXIIIrd General Assembly of the IAU (Part B), 1997 , 1998 , pp. 861 - 864
Copyright
Copyright © Kluwer 1998

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