Accession Number : AD0600268

Title :   RESEARCH DIRECTED TOWARD THE INVESTIGATION OF SOLAR PHENOMENA.

Descriptive Note : Final rept., 1 Jan 59-28 Feb 64,

Corporate Author : HARVARD COLL OBSERVATORY CAMBRIDGE MASS

Personal Author(s) : Bell,Barbara ; menzel,Donald H.

Report Date : FEB 1964

Pagination or Media Count : 28

Abstract : The research falls into the following major categories: (1) Solar-terrestrial correlations, relating geomagnetic disturbance and solar proton (PCA) events to such solar features as the location (north or south of the solar equator) and magnetic class of the flaring sunspot, radio bursts of sprectral types II and IV and various properties thereof, and the brightness of the green coronal line. (2) Studies of solar prominences, involving both measurement and classification of observed prominences, and theoretical investigation of their structure and of physical processes important in their formation. (3) Studies of the rocket ultraviolet solar spectrum, with special attention to the Lyman-alpha line of hydrogen as a major source of opacity over several hundred angstroms. (4) Work on the calculation of theoretical transition probabilities for complex atoms. (5) Studies of other solar features including the sunspot zone, the positional relation of flares to sunspots, details of the solar disk in the light of H alpha, activity zones in the emission-line corona. (6) Miscellaneous theoretical analyses of solar seeing and of the influence of various atmospheric contaminants on the brightness of the daytime sky. (Author)

Descriptors :   (*SOLAR RADIATION, SOLAR DISTURBANCES), (*SOLAR SPECTRUM, SCIENTIFIC RESEARCH), (*SOLAR CORONA, SCIENTIFIC RESEARCH), SOLAR FLARES, SUNSPOTS, GEOMAGNETISM, MAGNETIC STORMS

Distribution Statement : APPROVED FOR PUBLIC RELEASE