Published February 1985
| Published
Journal Article
Open
Latitude variation of recurrent Mev-energy proton flux enhancements in the heliocentric radial range 11 to 20 AU and possible correlation with solar coronal hole dynamics
- Creators
- Christon, S. P.
-
Stone, E. C.
Abstract
Recurrent low energy ( ≳0.5 MeV) proton flux enhancements, reliable indicators of corotating plasma interaction regions in interplanetary space, have been observed on the Voyager 1 and 2 and Pioneer 11 spacecraft in the heliographic latitude range 2°S to 23°N and the heliocentric radial range 11 to 20 AU. After a period of rather high correlation between fluxes at different latitudes in early 1983, distinct differences develop. The evolution of the fluxes appears to be related to the temporal and latitudinal dynamics of solar coronal holes, suggesting that information about the latitudinal structure of solar wind stream sources propagates to these distances.
Additional Information
© 1985 American Geophysical Union. Manuscript Accepted: 13 November 1984; Manuscript Received: 24 October 1984. We are grateful to R.E. Vogt for his contribution as principal investigator for the Cosmic Ray Subsystem on the Voyager spacecraft. We also wish to thank F.B. McDonald, the principal investigator for the Cosmic Ray Energy Spectra Experiment on Pioneer 11, for making the Pioneer 11 particle data available. We appreciate the contributions of the other Voyager Cosmic Ray Subsystem team members consisting of scientists and engineers at the California Institute of Technology, the Goddard Space Flight Center, the University of Arizona, and the University of New Hampshire. We also wish to thank H. E. Coffey and P.S. Mcintosh of the National Geophysical Data Center at Boulder, Colorado for some prepublication copies of Hα solar synoptic charts. Work at Caltech was supported in part by the National Aeronautics and Space Administration under contract JPL 49-556-63120-0-2600 and grant NGR 05-002-160.Attached Files
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Additional details
- Eprint ID
- 43797
- Resolver ID
- CaltechAUTHORS:20140212-114300017
- JPL 49-556-63120-0-2600
- NASA
- NGR 05-002-160
- NASA
- Created
-
2014-02-12Created from EPrint's datestamp field
- Updated
-
2021-11-10Created from EPrint's last_modified field
- Caltech groups
- Space Radiation Laboratory
- Other Numbering System Name
- Space Radiation Laboratory
- Other Numbering System Identifier
- 1984-07