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154-day periodicity in the occurrence rate of proton flares

Technical Report ·
OSTI ID:6770267
;
We have analyzed periodicities in the occurrence rate of proton flares for solar cycles 19 through 21 (1955-86) and have identified two epochs that exhibit a 154-day periodicity. These epochs are a 14-year interval from 1958 January through 1971 December and a 5.5-year interval from 1978 February to 1983 August. The best-determined period is 154.6. We have found that the phase of this periodicity changed between the above-mentioned two epochs by about one half of a period. It appears that the occurrence rate of proton flares is more sensitive to the 154-day periodicity than the occurrence rate of flares selected by other criteria.
Research Organization:
Stanford Univ., CA (USA)
OSTI ID:
6770267
Report Number(s):
AD-A-219333/2/XAB
Country of Publication:
United States
Language:
English

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Related Subjects

640104* -- Astrophysics & Cosmology-- Solar Phenomena
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BARYONS
ELEMENTARY PARTICLES
FERMIONS
HADRONS
MAIN SEQUENCE STARS
NUCLEONS
PROTONS
RADIATIONS
SOLAR ACTIVITY
SOLAR FLARES
SOLAR PARTICLES
SOLAR PROTONS
SOLAR RADIATION
STARS
STARSPOTS
STELLAR ACTIVITY
STELLAR RADIATION
SUN
SUNSPOTS
VARIATIONS