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Observations of the 1980 April 30 limb flare by the ultraviolet spectrometer and polarimeter on the Solar Maximum MissionObservations of the M2 limb flare of 1980 April 30 by the ultraviolet spectrometer and polarimeter in the C IV 1548 A line are described and compared with observations from other SMM instruments and with ground-based H-alpha data. Events observed during the 18 minutes leading up to the flare impulsive phase include the filling of a small loop with material moving at about 20 km/s, followed by a rapid brightening in C IV, H-alpha, and hard X-rays, with a subsequent brightening of a higher set of loops. The rapid brightening appears to be at the junction of the small loop with the overlying magnetic structures, which suggests the flare may be caused by their interaction.
Document ID
19810046951
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Woodgate, B. E. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Shine, R. A. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Brandt, J. C. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Chapman, R. D. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Michalitsianos, A. G. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Kenny, P. J. (NASA Goddard Space Flight Center Greenbelt, Md., United States)
Bruner, E. C. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Rehse, R. A. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Schoolman, S. A. (Lockheed Research Laboratories Palo Alto, Calif., United States)
Cheng, C. C. (NASA Marshall Space Flight Center Space Sciences Laboratory, Huntsville, Ala., United States)
Date Acquired
August 11, 2013
Publication Date
March 15, 1981
Publication Information
Publication: Astrophysical Journal
Subject Category
SOLAR PHYSICS
Distribution Limits
Public
Copyright
Other