Publication Date:
2019-07-12
Description:
The occurrence times of energetic (above 10 MeV) solar flare electron events observed on board the ISEE 3 spacecraft during the years 1978-1982 have been examined; strong evidence is found for a periodicity of 153 + or - 2 days, confirming the discovery of a periodicity in the occurrence of solar flares producing X-rays and gamma rays. The Rayleigh test for periodicity is applied to obtain a probability of less than 10 to the -6th that the times of the electron flares were drawn from a uniform distribution.
Keywords:
SOLAR PHYSICS
Type:
Astrophysical Journal Supplement Series (ISSN 0067-0049); 73; 279-283
Format:
text