Accession Number : AD0756827

Title :   Solar Activity in McMath Region 10789 During Disk Passage, 12 to 15 June 1970.

Descriptive Note : Physical sciences research papers,

Corporate Author : AIR FORCE CAMBRIDGE RESEARCH LABS L G HANSCOM FIELD MASS

Personal Author(s) : Carrigan,Anne L. ; Castelli,John P.

Report Date : 16 NOV 1972

Pagination or Media Count : 30

Abstract : Less than half a dozen longitude-identified active regions in the (current) 20th sunspot cycle produced 90 or more solar eruptions during disk passage. Besides a high flare-burst productivity, each of these was identified with energetic particle emission. A recent one of these regions was centered aroung longitude 226 degrees (17 degrees N latitude) in McMath region 10789, with central meridian passage on 16.8 June 1970. It is shown that the region which spawned an unusually high burst-to-flare ratio on 13 June had the maximum radio brightness at both 10.7 and 20 cm lambda in this brief interval. (Author Modified Abstract)

Descriptors :   (*SOLAR FLARES, EXTRATERRESTRIAL RADIO WAVES), SUNSPOTS, ASTRONOMY, STATISTICAL ANALYSIS, PROTONS, COSMIC RAYS

Subject Categories : Astrophysics

Distribution Statement : APPROVED FOR PUBLIC RELEASE