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White-light movies of the solar photosphere from the SOUP instrument on SpacelabInitial results are presented on solar granulation, pores and sunspots from the white-light films obtained by the Solar Optical Universal Polarimeter (SOUP) instrument in Spacelab 2. Several hours of movies were taken at various disk and limb positions in quiet and active regions. The images are diffraction-limited at 0.5 arcsec resolution and are, of course, free of atmospheric seeing and distortion. Properties of the granulation in magnetic and nonmagnetic regions are compared and are found to differ significantly in size, rate of intensity variation, and lifetime. In quiet sun, on the order of fifty-percent of the area has at least one 'exploding granule' occurring in it during a 25-min period. Local correlation tracking has detected several types of transverse flows, including systematic outflow from the penumbral boundary of a spot, motion of penumbral filaments, and cellular flow patterns of supergranular and mesogranular size. Feature tracking has shown that, in the quiet sun, the average granule fragment has a velocity of about one kilometer/second.
Document ID
Document Type
Reprint (Version printed in journal)
Title, A. M.
(Lockheed Missiles and Space Co. Palo Alto, CA, United States)
Tarbell, T. D.
(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)
Simon, G. W.
(USAF, Geophysics Laboratory, Sunspot NM, United States)
Date Acquired
August 13, 2013
Publication Date
January 1, 1986
Publication Information
Publication: Advances in Space Research
Volume: 6
Issue: 8 19
ISSN: 0273-1177
Subject Category
Solar Physics
Accession Number
Funding Number(s)
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