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Solar cycle dependence of the geomagnetically trapped anomalous cosmic rays

Selesnick, R. S. and Cummings, A. C. and Leske, R. A. and Mewaldt, R. A. and Stone, E. C. and Cummings, J. R. (2000) Solar cycle dependence of the geomagnetically trapped anomalous cosmic rays. Geophysical Research Letters, 27 (15). pp. 2349-2352. ISSN 0094-8276. https://resolver.caltech.edu/CaltechAUTHORS:20140225-104036311

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Abstract

Solar cycle variations in the intensity of geomagnetically trapped anomalous cosmic ray (ACR) oxygen are demonstrated by ∼7 years of data from the SAMPEX satellite. They correspond to similar variations in the interplanetary ACR source. Trapped particle losses during the approach to solar maximum are not associated with geomagnetic activity and may be consistent with atmospheric energy degradation. The average trapped particle pitch angle distribution and energy spectra support this interpretation in which both source and loss rates are proportional to atmospheric density.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1029/2000GL000049 DOIArticle
http://onlinelibrary.wiley.com/doi/10.1029/2000GL000049/abstractPublisherArticle
ORCID:
AuthorORCID
Cummings, A. C.0000-0002-3840-7696
Leske, R. A.0000-0002-0156-2414
Mewaldt, R. A.0000-0003-2178-9111
Stone, E. C.0000-0002-2010-5462
Additional Information:© 2000 American Geophysical Union. Received March 1, 2000; accepted April 13, 2000. This work was supported by NASA Cooperative Agreement 26979B with the Aerospace Corporation and by NASA grant NAS5-2963. The Climax neutron monitor is supported by National Science Foundation Grant ATM-9613963.
Group:Space Radiation Laboratory
Funders:
Funding AgencyGrant Number
NASA Cooperative Agreement26979B
Aerospace CorporationUNSPECIFIED
NASANAS5-2963
NSFATM-9613963
Issue or Number:15
Record Number:CaltechAUTHORS:20140225-104036311
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20140225-104036311
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:43978
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:05 Mar 2014 03:42
Last Modified:20 Feb 2020 14:33

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