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Proton Modulation Near Solar Minimum Periods in Consecutive Solar Cycles

Moraal, H. (1990) Proton Modulation Near Solar Minimum Periods in Consecutive Solar Cycles. In: Proceedings of the 21st International Cosmic Ray Conference. Vol.6. University of Adelaide , Northfield, South Australia, pp. 140-143.

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Observations or the Pioneer/Voyager missions during 1985/1986/1987, together with observations at Earth in 1976/1977 and 1987, are compared with predictions of a steady-state modulation model. The qualitative features of the modulation are well understood, but to get quantitative agreement with observations, drastic modifications have to be made to the Parker spiral magnetic field above the solar poles.

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Additional Information:© Organizing Committee of the 21st Int. Cosmic Ray Conference. Provided by the NASA Astrophysics Data System. I gratefully acknowledge the computational and technical assistance of K. R. Lim, a.s well as the stimulating discussions with A.C. Cummings and E.C. Stone. This work was supported in part by NASA under contract NAS-7-918 and grant NGR-05-002-160.
Group:Space Radiation Laboratory
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Space Radiation Laboratory1989-16
Record Number:CaltechAUTHORS:20140708-163116152
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:47086
Deposited By: Deborah Miles
Deposited On:15 Jul 2014 17:33
Last Modified:03 Oct 2019 06:49

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