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Rigidity-independent coronal propagation and escape of solar protons and alpha particlesIn a study of rigidity-independent coronal propagation processes, data on the azimuthal variation of the solar proton/alpha-particle ratio were obtained. Sources for the data included a statistical analysis of events observed by Heos-2, a comparative study of events recorded by both Heos-2 and Pioneer-10 and -11, and a multiday survey of individual events observed by Heos-2 and Pioneer-10. The statistical investigation of Heos-2 events reveals an increase of the lower value of the proton/alpha-particle ratio away from the well-connected region. The data from one or two spacecraft connected at different heliolongitudes indicates no azimuthal dependence of the proton/alpha-particle ratio. All the data appear to suggest rigidity-independent propagation or escape processes.
Document ID
19780053445
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Perron, C.
(European Space Agency. European Space Research and Technology Center ESTEC, Noordwijk, Netherlands)
Domingo, V.
(European Space Agency. European Space Research and Technology Center ESTEC, Noordwijk, Netherlands)
Reinhard, R.
(European Space Agency. European Space Research and Technology Center ESTEC, Noordwijk, Netherlands)
Wenzel, K.-P.
(ESA Space Science Dept., Noordwijk, Netherlands)
Date Acquired
August 9, 2013
Publication Date
May 1, 1978
Publication Information
Publication: Journal of Geophysical Research
Volume: 83
Subject Category
Solar Physics
Accession Number
78A37354
Funding Number(s)
CONTRACT_GRANT: NAS2-6551
Distribution Limits
Public
Copyright
Other

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