Accession Number : AD0779434

Title :   The Fine Structure of the Solar Chromosphere.

Descriptive Note : Interim rept. 1 Feb-30 Sep 73,

Corporate Author : CHULALONGKORN UNIV BANGKOK (THAILAND) DEPT OF PHYSICS

Personal Author(s) : Bhavilai,Rawi

Report Date : 30 NOV 1973

Pagination or Media Count : 24

Abstract : The solar limb has been studied visually and photographically in the light of H alpha and the combined results are reported. The appearance of a spicule changes with wavelength settings. Effects due to changes of spicule velocities with height and opacity-wavelength relations are indicated. A number of bright spicules seen in the wings are identified with bright mottles seen in the line core. The dark band appears between delta lambda = plus or minus 1.0 A and delta lambda = plus or minus 0.70 A. Examination of a small mottle cluster in a series of photographs taken in steps from H alpha + 0.85 A to H alpha + 0.10 A leads to a three-dimensional model of a typical mottle cluster. (Author)

Descriptors :   *Chromosphere, *Solar structure, Solar activity, Thailand

Subject Categories : Astrophysics

Distribution Statement : APPROVED FOR PUBLIC RELEASE