Reports

A Rotating Solar Magnetic " Dipole" Observed from 1926 to 1968

Science  19 Nov 1971:
Vol. 174, Issue 4011, pp. 820-821
DOI: 10.1126/science.174.4011.820

Abstract

A recurring pattern with a period of 26⅞ days observed in the polar geomagnetic field during the interval from 1926 to 1941 appears to persist in the interplanetary magnetic field polarity observed with spacecraft during the interval from 1963 to 1968. This observation suggests the existence of a rotating solar magnetic "dipole" with a period of 26⅞ ± 0.003 days.

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