Abstract

MENDOZA-TORRES, J. E.; LUO, X.  and  SALAZAR, H.. The cosmic ray and the 10.7 cm flux variations during solar cycles 19-23. Rev. mex. astron. astrofis [online]. 2014, vol.50, n.2, pp.245-253. ISSN 0185-1101.

The cosmic ray flux (CRF) and 10.7 cm flux (F10.7) are studied for solar cycles 19-23. The cross-correlations show longer time-dependence at odd than at even cycles. A shift of the maximum at the histograms of CRF¹ /F10.7¹ (the ratios of normalized values), does not depend on the polarity of the cycle. The behavior of CRF¹ vs F10.7¹ differs for odd and even cycles and also for different cycle phases. We fitted an inverted CRF¹ profile to the F10.7¹ profile with a linear function. The F10.7¹/CRF^inv histogram differs for odd and even cycles. The results for sunspot number (SSN) are similar to F10.7 but differ for the F10.7¹ /CRF^inv histograms. Summarizing, besides the differences between odd and even cycles, there occur variations at different phases of the cycles and also variations independent of the polarity of the cycle, the latter perhaps arising outside the heliosphere.

Keywords : Sun [activity]; Sun [heliosphere]; Sun [particle emission]; Sun [radio radiation].

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