High resolution observations of the chromosphere at mm and cm wavelengths |
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Authors: | M Simon |
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Institution: | (1) Dept. of Earth and Space Sciences, State University of New York, 11790 Stony Brook, N. Y., U.S.A. |
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Abstract: | High resolution observations of the Sun at 3.3 mm, 3.5 mm, 1.35 cm, and 1.95 cm which were obtained by tracking narrow beam width antennas on the lunar limb as it occulted the Sun are described. The observations indicate that: (1) the region emitting at these wavelengths is very irregular with typical length scales smaller than one half minute of arc, (2) the number of roughness elements responsible for the irregular structure is small within an area of one half minute of arc square, and (3) the roughness elements observed at wavelengths greater than 1 cm extend to 109 cm beyond the optical limb. |
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