The origin of the most energetic galactic cosmic rays: supernova explosions into massive star plasma winds
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F19%3A00546545" target="_blank" >RIV/68378271:_____/19:00546545 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.3390/galaxies7020048" target="_blank" >https://doi.org/10.3390/galaxies7020048</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3390/galaxies7020048" target="_blank" >10.3390/galaxies7020048</a>
Alternative languages
Result language
angličtina
Original language name
The origin of the most energetic galactic cosmic rays: supernova explosions into massive star plasma winds
Original language description
We propose that the high energy Cosmic Ray particles up to the upturn commonly called the ankle, from around the spectral turn-down commonly called the knee, mostly come from Blue Supergiant star explosions. At the upturn, i.e., the ankle, Cosmic Rays probably switch to another source class, most likely extragalactic sources. To show this we recently compiled a set of Radio Supernova data where we compute the magnetic field, shock speed and shock radius. This list included both Blue and Red Supergiant star explosions, both data show the same magnetic field strength for these two classes of stars despite very different wind densities and velocities. Using particle acceleration theory at shocks, those numbers can be transformed into characteristic ankle and knee energies. Without adjusting any free parameters both of these observed energies are directly indicated by the supernova data. In the next step in the argument, we use the Supernova Remnant data of the starburst galaxy M82.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10303 - Particles and field physics
Result continuities
Project
—
Continuities
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Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Galaxies
ISSN
2075-4434
e-ISSN
2075-4434
Volume of the periodical
7
Issue of the periodical within the volume
2
Country of publishing house
CH - SWITZERLAND
Number of pages
23
Pages from-to
48
UT code for WoS article
000474937600006
EID of the result in the Scopus database
2-s2.0-85069923248