Sunspot Observations from the SOUP Instrument on Spacelab 2. (Reannouncement with New Availability Information).

摘要

A series of white light images obtained by the SOUP instrument on Spacelab 2 of active region 4682 on August 5, 1985 have been analyzed in the area containing the sunspot. Although the umbra of the spot is underexposed, the film is well exposed in the penumbral regions. These data have been digitially processed to remove noise and to separate p-mode oscillations from low velocity material motions. The results of this preliminary investigation include: (1) proper motion measurements of a radial outflow in the photospheric granulation pattern just outside the penumbra; (2) discovery of occassional bright structures ('streakers') that appear to be ejected outward from the penumbra; (3) broad dark 'clouds' moving outward in the penumbra in addition to the well known bright penumbral grains moving inward; (4) apparent extensions and contractions of penumbral filaments over the photosphere; and (5) observation of a faint bubble or loop-like structure which seems to expand from two bright penumbral filaments into the photosphere. Sunspots, Magnetic fields, Velocity fields, Penumbral structure.