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Correlation lifetimes of quiet and magnetic granulation from the SOUP instrument on Spacelab 2The time sequences of diffraction limited granulation images obtained by the Solar Optical Universal Polarimeter on Spacelab 2 are presented. The uncorrection autocorrelation limetime in magnetic regions is dominated by the 5-min oscillation. The removal of this oscillation causes the autocorrelation lifetime to increase by more than a factor of 2. The results suggest that a significant fraction of granule lifetimes are terminated by nearby explosions. Horizontal displacements and transverse velocities in the intensity field are measured. Lower limits to the lifetime in the quiet and magnetic sun are set at 440 s and 950 s, respectively.
Document ID
19890051521
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Title, A.
(Lockheed Missiles and Space Co. Palo Alto, CA, United States)
Tarbell, T.
(Lockheed Missiles and Space Co. Palo Alto, CA, United States)
Topka, K.
(Lockheed Missiles and Space Co. Palo Alto, CA, United States)
Acton, L.
(Lockheed Missiles and Space Co. Palo Alto, CA, United States)
Duncan, D.
(Lockheed Research Laboratories Palo Alto, CA, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1988
Publication Information
Publication: Astrophysical Letters and Communications
Volume: 27
Issue: 3 19
ISSN: 0888-6512
Subject Category
Solar Physics
Report/Patent Number
AD-A211361
Accession Number
89A38892
Funding Number(s)
CONTRACT_GRANT: NAS8-32805
Distribution Limits
Public
Copyright
Other

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