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Submillimeter solar limb profiles determined from observations of the total solar eclipse of 1988 March 18Observations were made of the extreme solar limb in six far-infrared wavelength bands ranging from 30 to 670 micron using the Kuiper Airborne Observatory during the total eclipse of the sun on 1988 March 18. By observations of the occultation of the solar limb by the moon, it was possible to obtain a spatial resolution of 0.5 arcsec normal to the limb. The solar limb was found to be extended with respect to the visible limb at all of these wavelengths, with the extension increasing with wavelength. Limb brightening was observed to increase slightly with increasing wavelength, and no sign of a sharp emission spike at the extreme limb was found at any of these wavelengths. The observations can be well fitted by a chromospheric model incorporating cool dense spicules in the lower chromosphere.
Document ID
19920030054
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Roellig, T. L.
(NASA Ames Research Center Moffett Field, CA, United States)
Becklin, E. E.
(California, University Los Angeles, United States)
Jefferies, J. T.
(NASA Ames Research Center Moffett Field, CA, United States)
Kopp, G. A.
(National Optical Astronomy Observatories Tucson, AZ, United States)
Lindsey, C. A.
(NASA Ames Research Center Moffett Field, CA, United States)
Orrall, F. Q.
(Hawaii, University Honolulu, United States)
Werner, M. W.
(JPL Pasadena, CA, United States)
Date Acquired
August 15, 2013
Publication Date
November 1, 1991
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 381
ISSN: 0004-637X
Subject Category
Solar Physics
Accession Number
92A12678
Funding Number(s)
CONTRACT_GRANT: NAGW-723
CONTRACT_GRANT: NAG2-418
Distribution Limits
Public
Copyright
Other

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