Galactic Cosmic Ray Origins and OB Associations: Evidence from SuperTIGER Observations of Elements _(26)Fe through _(40)Zr
We report abundances of elements from _(26)Fe to _(40)Zr in the cosmic radiation measured by the SuperTIGER (Trans-Iron Galactic Element Recorder) instrument during 55 days of exposure on a long-duration balloon flight over Antarctica. These observations resolve elemental abundances in this charge r...
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ftcaltechauth:oai:authors.library.caltech.edu:71732 2023-05-15T13:55:46+02:00 Galactic Cosmic Ray Origins and OB Associations: Evidence from SuperTIGER Observations of Elements _(26)Fe through _(40)Zr Murphy, R. P. Sasaki, M. Binns, W. R. Brandt, T. J. Hams, T. Israel, M. H. Labrador, A. W. Link, J. T. Mewaldt, R. A. Mitchell, J. W. Rauch, B. F. Sakai, K. Stone, E. C. Waddington, C. J. Walsh, N. E. Ward, J. E. Wiedenbeck, M. E. 2016-11-10 application/pdf https://authors.library.caltech.edu/71732/ https://authors.library.caltech.edu/71732/1/Murphy_2016_ApJ_831_148.pdf https://authors.library.caltech.edu/71732/2/1608.08183v1.pdf https://resolver.caltech.edu/CaltechAUTHORS:20161104-083553694 en eng American Astronomical Society https://authors.library.caltech.edu/71732/1/Murphy_2016_ApJ_831_148.pdf https://authors.library.caltech.edu/71732/2/1608.08183v1.pdf Murphy, R. P. and Sasaki, M. and Binns, W. R. and Brandt, T. J. and Hams, T. and Israel, M. H. and Labrador, A. W. and Link, J. T. and Mewaldt, R. A. and Mitchell, J. W. and Rauch, B. F. and Sakai, K. and Stone, E. C. and Waddington, C. J. and Walsh, N. E. and Ward, J. E. and Wiedenbeck, M. E. (2016) Galactic Cosmic Ray Origins and OB Associations: Evidence from SuperTIGER Observations of Elements _(26)Fe through _(40)Zr. Astrophysical Journal, 831 (2). Art. No. 148. ISSN 0004-637X. doi:10.3847/0004-637X/831/2/148. https://resolver.caltech.edu/CaltechAUTHORS:20161104-083553694 <https://resolver.caltech.edu/CaltechAUTHORS:20161104-083553694> other Article PeerReviewed 2016 ftcaltechauth https://doi.org/10.3847/0004-637X/831/2/148 2021-11-18T18:39:36Z We report abundances of elements from _(26)Fe to _(40)Zr in the cosmic radiation measured by the SuperTIGER (Trans-Iron Galactic Element Recorder) instrument during 55 days of exposure on a long-duration balloon flight over Antarctica. These observations resolve elemental abundances in this charge range with single-element resolution and good statistics. These results support a model of cosmic ray origin in which the source material consists of a mixture of 19_(-6^(+11)% material from massive stars and ~81% normal interstellar medium material with solar system abundances. The results also show a preferential acceleration of refractory elements (found in interstellar dust grains) by a factor of ~4 over volatile elements (found in interstellar gas) ordered by atomic mass (A). Both the refractory and volatile elements show a mass-dependent enhancement with similar slopes. Article in Journal/Newspaper Antarc* Antarctica Caltech Authors (California Institute of Technology) The Astrophysical Journal 831 2 148 |
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Caltech Authors (California Institute of Technology) |
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ftcaltechauth |
language |
English |
description |
We report abundances of elements from _(26)Fe to _(40)Zr in the cosmic radiation measured by the SuperTIGER (Trans-Iron Galactic Element Recorder) instrument during 55 days of exposure on a long-duration balloon flight over Antarctica. These observations resolve elemental abundances in this charge range with single-element resolution and good statistics. These results support a model of cosmic ray origin in which the source material consists of a mixture of 19_(-6^(+11)% material from massive stars and ~81% normal interstellar medium material with solar system abundances. The results also show a preferential acceleration of refractory elements (found in interstellar dust grains) by a factor of ~4 over volatile elements (found in interstellar gas) ordered by atomic mass (A). Both the refractory and volatile elements show a mass-dependent enhancement with similar slopes. |
format |
Article in Journal/Newspaper |
author |
Murphy, R. P. Sasaki, M. Binns, W. R. Brandt, T. J. Hams, T. Israel, M. H. Labrador, A. W. Link, J. T. Mewaldt, R. A. Mitchell, J. W. Rauch, B. F. Sakai, K. Stone, E. C. Waddington, C. J. Walsh, N. E. Ward, J. E. Wiedenbeck, M. E. |
spellingShingle |
Murphy, R. P. Sasaki, M. Binns, W. R. Brandt, T. J. Hams, T. Israel, M. H. Labrador, A. W. Link, J. T. Mewaldt, R. A. Mitchell, J. W. Rauch, B. F. Sakai, K. Stone, E. C. Waddington, C. J. Walsh, N. E. Ward, J. E. Wiedenbeck, M. E. Galactic Cosmic Ray Origins and OB Associations: Evidence from SuperTIGER Observations of Elements _(26)Fe through _(40)Zr |
author_facet |
Murphy, R. P. Sasaki, M. Binns, W. R. Brandt, T. J. Hams, T. Israel, M. H. Labrador, A. W. Link, J. T. Mewaldt, R. A. Mitchell, J. W. Rauch, B. F. Sakai, K. Stone, E. C. Waddington, C. J. Walsh, N. E. Ward, J. E. Wiedenbeck, M. E. |
author_sort |
Murphy, R. P. |
title |
Galactic Cosmic Ray Origins and OB Associations: Evidence from SuperTIGER Observations of Elements _(26)Fe through _(40)Zr |
title_short |
Galactic Cosmic Ray Origins and OB Associations: Evidence from SuperTIGER Observations of Elements _(26)Fe through _(40)Zr |
title_full |
Galactic Cosmic Ray Origins and OB Associations: Evidence from SuperTIGER Observations of Elements _(26)Fe through _(40)Zr |
title_fullStr |
Galactic Cosmic Ray Origins and OB Associations: Evidence from SuperTIGER Observations of Elements _(26)Fe through _(40)Zr |
title_full_unstemmed |
Galactic Cosmic Ray Origins and OB Associations: Evidence from SuperTIGER Observations of Elements _(26)Fe through _(40)Zr |
title_sort |
galactic cosmic ray origins and ob associations: evidence from supertiger observations of elements _(26)fe through _(40)zr |
publisher |
American Astronomical Society |
publishDate |
2016 |
url |
https://authors.library.caltech.edu/71732/ https://authors.library.caltech.edu/71732/1/Murphy_2016_ApJ_831_148.pdf https://authors.library.caltech.edu/71732/2/1608.08183v1.pdf https://resolver.caltech.edu/CaltechAUTHORS:20161104-083553694 |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_relation |
https://authors.library.caltech.edu/71732/1/Murphy_2016_ApJ_831_148.pdf https://authors.library.caltech.edu/71732/2/1608.08183v1.pdf Murphy, R. P. and Sasaki, M. and Binns, W. R. and Brandt, T. J. and Hams, T. and Israel, M. H. and Labrador, A. W. and Link, J. T. and Mewaldt, R. A. and Mitchell, J. W. and Rauch, B. F. and Sakai, K. and Stone, E. C. and Waddington, C. J. and Walsh, N. E. and Ward, J. E. and Wiedenbeck, M. E. (2016) Galactic Cosmic Ray Origins and OB Associations: Evidence from SuperTIGER Observations of Elements _(26)Fe through _(40)Zr. Astrophysical Journal, 831 (2). Art. No. 148. ISSN 0004-637X. doi:10.3847/0004-637X/831/2/148. https://resolver.caltech.edu/CaltechAUTHORS:20161104-083553694 <https://resolver.caltech.edu/CaltechAUTHORS:20161104-083553694> |
op_rights |
other |
op_doi |
https://doi.org/10.3847/0004-637X/831/2/148 |
container_title |
The Astrophysical Journal |
container_volume |
831 |
container_issue |
2 |
container_start_page |
148 |
_version_ |
1766262600152121344 |