A search for heliosphere pulsation in the range 1c/yr to 1c/10yr

Details A search for heliosphere pulsation in the range 1c/yr to 1c/10yr A search for heliosphere pulsation in the range 1c/yr to 1c/10yr

Aug 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983icrc...10..174a&link_type=abstract

IN: International Cosmic Ray Conference, 18th, Bangalore, India, August 22-September 3, 1983, Late Papers. Volume 10 (A85-22801

Physics

Heliosphere, Periodic Variations, Solar Cosmic Rays, Solar Oscillations, Long Term Effects, Solar Activity Effects, Sunspots

Scientific paper

The results of a statistical search for long-term pulsations of the solar cavity, applying the cyclic-variation analysis of Attolini et al. (1983) to the corrected Huancayo ion-chamber data of Forbush (1958) for the period 1937-1953 and to Climax neutron-chamber data for the period 1953-1979, are presented in graphs and characterized in terms of the time variation of the phase and amplitude stretching indices z(phi) and z(a). Phenomena observed include z(phi) and z(a) peaks at periods near 1 yr with a drift toward 1.3 yr near solar-activity minima, a second group of peaks near 2 yr with a phase inversion around 1958, a small fluctuation signature at 5 yr, and a correlation of cosmic-ray intensity and sunspot number at periods 10.5, 2, and 1.3 yr. with a delay of 6-8 mc.

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