Accession Number : AD0673911

Title :   RESEARCH DIRECTED TOWARD THE OBSERVATION AND INTERPRETATION OF SOLAR PHENOMENA.

Descriptive Note : Final rept. 1 May 67-30 Apr 68,

Corporate Author : HARVARD COLL OBSERVATORY CAMBRIDGE MASS

Personal Author(s) : Bell,Barbara ; DeMastus,Howard L. ; Menzel,Donald H.

Report Date : MAY 1968

Pagination or Media Count : 19

Abstract : The first section describes research at Harvard in two major categories: (1) Analyses of solar observations made at Sacramento Peak and elsewhere of the green coronal line, and of sunspots. (2) Theoretical studies in magnetohydrodynamics, leading toward development of a model for sunspots, and in atomic theory, on the intensities of spectral lines for improved interpretation of the solar spectrum. The second section reviews the operation at Sacramento Peak of the optical solar patrols of flares in the light of Ha, of sunspots in white light, and of the coronal emission lines by spectrograph and cinematograph; it also notes a photographic observation of a flare in white light. (Author)

Descriptors :   (*SOLAR ATMOSPHERE, SUNSPOTS), SOLAR CORONA, PHOTOGRAPHY, EMISSIVITY, ASTRONOMICAL OBSERVATORIES, THEORY, MAGNETOHYDRODYNAMICS, SOLAR FLARES, LIGHT TRANSMISSION, INTENSITY, SPECTROSCOPY, SUN, LINE SPECTRA, HYDROGEN

Subject Categories : Astrophysics

Distribution Statement : APPROVED FOR PUBLIC RELEASE