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Onset of Solar Modulation in the Outer Heliosphere as Seen in Anomalous Cosmic Rays

Cummings, A. C. and Stone, E. C. (2001) Onset of Solar Modulation in the Outer Heliosphere as Seen in Anomalous Cosmic Rays. In: Proceedings of the 27th International Cosmic Ray Conference. Vol.10. Copernicus Systems and Technology GmbH , Berlin, Germany, pp. 4251-4254.

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We examine intensities and gradients of anomalous cosmic rays determined from observations on the Voyager 1 and 2 spacecraft to study the rapid increase in solar modulation that begins near mid-2000. We suggest that these effects are due to the arrival in the region of the spacecraft of complex magnetic field topologies associated with the reversal of the Sun's magnetic field.

Item Type:Book Section
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URLURL TypeDescription
Cummings, A. C.0000-0002-3840-7696
Stone, E. C.0000-0002-2010-5462
Additional Information:© Copernicus GmbH. Provided by the NASA Astrophysics Data System. work was supported by NASA under contract NAS7-918. We thank the Wilcox Solar Observatory for the heliospheric Lill values and coronal field maps (lmp:// wso/wso.html ). We thank the MIT Space Plasma Group for supplying the daily averaged IMP-8 solar wind speeds ( We thank the ACE/SWEPAM team for supplying lhe ACE solar wind speeds ( .cal ACE/ ASC/level2/index.html).
Group:Space Radiation Laboratory
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Space Radiation Laboratory2001-15
Record Number:CaltechAUTHORS:20150302-110723970
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:55407
Deposited By: Deborah Miles
Deposited On:04 Mar 2015 05:15
Last Modified:20 Feb 2020 14:33

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