Accession Number : AD0634082

Title :   SOLAR FLARE OCCURRENCE AS A FUNCTION OF SUNSPOT SIZE.

Descriptive Note : Interim scientific rept., Air Force Surveys in geophysics,

Corporate Author : TRAVELERS RESEARCH CENTER INC HARTFORD CONN

Personal Author(s) : Enger,Isadore ; podsiadlo,Ronald T. ; Jensen,Delos C. ; Ward,Fred

Report Date : APR 1966

Pagination or Media Count : 25

Abstract : An objective technique has been developed for assessing the probability of occurrence of solar flares in a particular sunspot group, given only the sizes of the sunspot group on two consecutive days. The sunspot data cover the 10-year period 1955 to 1964 and have been published in the Greenwich Photoheliographic Results. The flare data were measured at Sacramento Peak, New Mexico. The flare and spot data were combined by a simple, objective technique which depends only on the size of the spot group and the relative positions of the spot group and flare. These results show the very marked dependence of flare occurrence on the size of the spot group and a significant, but very much smaller, dependence on the change in group size from one day to the next. (Author)

Descriptors :   (*SOLAR FLARES, *SUNSPOTS), ASTRONOMY, CORRELATION TECHNIQUES, ASTROPHYSICS

Subject Categories : Astrophysics

Distribution Statement : APPROVED FOR PUBLIC RELEASE