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| Titel |
Cosmic ray particles from exploding massive stars with winds |
| VerfasserIn |
P. L. Biermann |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
2199-3955
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| Digitales Dokument |
URL |
| Erschienen |
In: ASTRA Proceedings ; 1, no. 1 ; Nr. 1, no. 1 (2014-06-27), S.29-31 |
| Datensatznummer |
250115107
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| Publikation (Nr.) |
 copernicus.org/ap-1-29-2014.pdf |
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| Zusammenfassung |
| The origin of cosmic rays is still unsettled. Many sources have been proposed
over the years, and exploding stars still provide the most promising
candidates. Here we examine one of these scenarios, and compare the resulting
predictions with data: Massive stars have winds, and when these stars
explode, the resulting shock runs through the wind. The observable phenomenon
is called radio-supernova, and many have been observed in non-thermal radio
emission. This emission allows to determine the magnetic field in the wind as
a function of radius, and so allows to check, whether such explosions can
achieve the high energies required and also explain the flux and the spectra
of cosmic rays. The observations show this to be the case, and so we conclude
that radio supernovae can explain the high-energy Galactic cosmic rays over
the entire energy range, and that the spectral predictions are compatible
with observations. |
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