The evolution of the anomalous component of the cosmic rays during the Ulysses mission |
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Authors: | K. J. Trattner R. G. Marsden T. R. Sanderson K. -P. Wenzel |
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Affiliation: | (1) Space Science Dept. of ESA. ESTEC, Noordwijk, The Netherlands |
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Abstract: | We have studied the evolution of the anomalous cosmic ray component at ULYSSES using observations of the quiet time helium fluxes obtained with the COSPIN Low Energy Telescope during the years from launch in October 1990 to the latest data in 1994. Shown are preliminary results of measurements in the energy range from 4.0 to 19 MeV/n. Following the drop in solar activity in late 1991, the low energy cosmic ray helium flux started to increase and continue to rise until the end of 1993, signifying the appearance of the anomalous component at ULYSSES. |
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