Elemental Composition at the Cosmic-Ray Source Derived from the ACE-CRIS Instrument. I. _6C to _(28)Ni

Israel, M. H. and Lave, K. A. and Wiedenbeck, M. E. and Binns, W. R. and Christian, E. R. and Cummings, A. C. and Davis, A. J. and de Nolfo, G. A. and Leske, R. A. and Mewaldt, R. A. and Stone, E. C. and von Rosenvinge, T. T. (2018) Elemental Composition at the Cosmic-Ray Source Derived from the ACE-CRIS Instrument. I. _6C to _(28)Ni. Astrophysical Journal, 865 (1). Art. No. 69. ISSN 1538-4357. doi:10.3847/1538-4357/aad867. https://resolver.caltech.edu/CaltechAUTHORS:20180921-095050945

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Abstract

We report new elemental source abundances from _6C to _(28)Ni for galactic cosmic rays, using observations from the Cosmic Ray Isotope Spectrometer (CRIS) on board the NASA Advanced Composition Explorer spacecraft. Abundances were calculated using CRIS energy spectra at energies below 550 MeV/nucleon from the 1997–98 and 2009–10 solar-minimum periods, as well as from the 2001–03 solar-maximum period. These new results, when combined with results for heavier elements reported in a forthcoming paper, are consistent with a model of galactic cosmic-ray origin where nuclei found in interstellar grains are accelerated preferentially over those found in interstellar gas, with this acceleration happening in OB associations.

Item Type:

Article

Related URLs:

URL	URL Type	Description
https://doi.org/10.3847/1538-4357/aad867	DOI	Article
http://iopscience.iop.org/article/10.3847/1538-4357/aad867	Publisher	Article

ORCID:

Author	ORCID
Israel, M. H.	0000-0002-8104-208X
Wiedenbeck, M. E.	0000-0002-2825-3128
Binns, W. R.	0000-0001-6110-3407
Christian, E. R.	0000-0003-2134-3937
Cummings, A. C.	0000-0002-3840-7696
de Nolfo, G. A.	0000-0002-3677-074X
Leske, R. A.	0000-0002-0156-2414
Mewaldt, R. A.	0000-0003-2178-9111
Stone, E. C.	0000-0002-2010-5462

Alternate Title:

Elemental Composition at the Cosmic-Ray Source Derived from the ACE-CRIS Instrument. I. 6C to 28Ni

Additional Information:

© 2018 The American Astronomical Society. Received 2018 January 29; revised 2018 July 16; accepted 2018 August 3; published 2018 September 21. NASA grants NNX08AI11G and NNX13AH66G supported the work performed at the California Institute of Technology, the Jet Propulsion Laboratory, and Washington University in St. Louis. The work done at Goddard Space Flight Center was funded by NASA through the ACE Project. We thank Nasser Barghouty for his private communication of updated partial interaction cross sections of protons on heavy nuclei, and we thank Christina Cohen for her editorial assistance in preparing this manuscript.

Group:

Space Radiation Laboratory

Funders:

Funding Agency	Grant Number
NASA	NNX08AI11G
NASA	NNX13AH66G

Subject Keywords:

astroparticle physics – cosmic rays – ISM: abundances

Issue or Number:

DOI:

10.3847/1538-4357/aad867

Record Number:

CaltechAUTHORS:20180921-095050945

Persistent URL:

https://resolver.caltech.edu/CaltechAUTHORS:20180921-095050945

Official Citation:

M. H. Israel et al 2018 ApJ 865 69

Usage Policy:

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

ID Code:

89824

Collection:

CaltechAUTHORS

Deposited By:

Tony Diaz

Deposited On:

21 Sep 2018 17:35

Last Modified:

16 Nov 2021 00:38

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