Observations of Anomalous Cosmic Rays at 1 AU

Leske, R. A. and Mewaldt, R. A. and Christian, E. R. and Cohen, C. M. S. and Cummings, A. C. and Slocum, P. L. and Stone, E. C. and von Rosenvinge, T. T. and Wiedenbeck, M. E. (2000) Observations of Anomalous Cosmic Rays at 1 AU. In: Acceleration and Transport of Energetic Particles Observed in the Heliosphere. AIP Conference Proceedings. No.528. American Institute of Physics , Melville, N.Y. , pp. 293-300. ISBN 1-56396-951-3. https://resolver.caltech.edu/CaltechAUTHORS:20111208-100352581

Preview

PDF - Published Version
See Usage Policy.
952kB

Use this Persistent URL to link to this item: https://resolver.caltech.edu/CaltechAUTHORS:20111208-100352581

Abstract

Anomalous cosmic rays (ACRs) provide a sensitive probe of the access of energetic particles to the inner heliosphere, varying in intensity by more than two orders of magnitude during the course of the solar cycle. New data which are becoming available from the Advanced Composition Explorer (ACE) can provide a detailed record of ACR intensity and spectral changes on short (~ 1 day) time scales during the approach to solar maximum, which will help address issues of ACR modulation and transport. The elemental and isotopic composition of ACRs provides important information on the source or sources of these particles, while their ionic charge state composition and its energy dependence serves as a diagnostic of their acceleration time scale. We review measurements of the ACR elemental, isotopic, and charge state composition and spectra as determined at 1 AU by SAMPEX, ACE, Wind, and other spacecraft. These results are important input to models of the acceleration, modulation, and transport of ACRs.

Item Type:

Book Section

Related URLs:

URL	URL Type	Description
http://dx.doi.org/10.1063/1.1324328	DOI	Article
http://link.aip.org/link/?APCPCS/528/293/1	Publisher	Article

ORCID:

Author	ORCID
Leske, R. A.	0000-0002-0156-2414
Mewaldt, R. A.	0000-0003-2178-9111
Christian, E. R.	0000-0003-2134-3937
Cohen, C. M. S.	0000-0002-0978-8127
Cummings, A. C.	0000-0002-3840-7696
Stone, E. C.	0000-0002-2010-5462
Wiedenbeck, M. E.	0000-0002-2825-3128

Additional Information:

© 2000 American Institute of Physics. Issue Date: 15 September 2000. This research was supported by NASA at the California Institute of Technology (under grant NAG5-6912), the Jet Propulsion Laboratory, and the Goddard Space Flight Center. We thank R. S. Selesnick, N. E. Yanasak, and B. Klecker for providing data used in some of the figures. Climax neutron monitor data were obtained from the web, courtesy of the University of Chicago, National Science Foundation grant ATM-9613963.

Group:

Space Radiation Laboratory

Funders:

Funding Agency	Grant Number
NASA	NAG5-6912
JPL	UNSPECIFIED
Goddard Space Flight Center	UNSPECIFIED
NSF	ATM-9613963

Subject Keywords:

primary cosmic rays, interstellar matter, cosmic ray origin, cosmic ray variations, solar activity, cosmic ray composition, element relative abundance, isotope relative abundance, cosmic ray energy spectra, transport processes, acceleration

Other Numbering System:

Other Numbering System Name	Other Numbering System ID
Space Radiation Laboratory	2000-25

Series Name:

AIP Conference Proceedings

Issue or Number:

528

Classification Code:

PACS: 98.70.Sa; 96.40.De

DOI:

10.1063/1.1324328

Record Number:

CaltechAUTHORS:20111208-100352581

Persistent URL:

https://resolver.caltech.edu/CaltechAUTHORS:20111208-100352581

Official Citation:

Observations of anomalous cosmic rays at 1 AU R. A. Leske, R. A. Mewaldt, E. R. Christian, C. M. S. Cohen, A. C. Cummings, P. L. Slocum, E. C. Stone, T. T. von Rosenvinge, and M. E. Wiedenbeck, AIP Conf. Proc. 528, 293 (2000), DOI:10.1063/1.1324328

Usage Policy:

No commercial reproduction, distribution, display or performance rights in this work are provided.

ID Code:

28370

Collection:

CaltechAUTHORS

Deposited By:

Ruth Sustaita

Deposited On:

08 Dec 2011 19:46

Last Modified:

09 Nov 2021 16:56

Repository Staff Only: item control page