Solar limb brightening at 820 microns

Details Solar limb brightening at 820 microns Solar limb brightening at 820 microns

Feb 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...277..424l&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 277, Feb. 1, 1984, p. 424-428.

Astronomy and Astrophysics

Astronomy

4

Infrared Astronomy, Limb Brightening, Solar Flux Density, Solar Limb, Chromosphere, Radial Distribution, Solar Temperature

Scientific paper

The sun in 820 micron radiation is mapped, and strong radial brightening of the intensity profile is found. The east and west limbs show an intensity excess of about twice that of the quiet north and south limbs. This may be attributable to active regions near the east and west limbs. The radial brightening observed is as strong as that observed by others at 1.3 mm, and much stronger than that observed at 350 microns by still others. A strong general increase in gradual radial brightening with wavelength longward of 350 microns is thus indicated, and this is attributed to variations in the character of chromospheric fine structure above the temperature minimum region.

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