Ulysses out-of-ecliptic observations of “27-day” variations in high energy cosmic ray intensity
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We report the discovery that for latitudes above ∼40°S, the observed recurring modulation of cosmic rays and anomalous nuclei occurs without the detection byUlysses of the solar wind velocity and magnetic field recurring enhancements that have, heretofore at lower latitudes, defined corotating interaction regions—i.e., the mechanism producing the recurring intensity variations >40°S appears to be located beyond the radial range ofUlysses.
KeywordsMagnetic Field Solar Wind Wind Velocity Lower Latitude Intensity Variation
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