Format:
1 Online-Ressource (xxiii, 146 Seiten, 15501 KB)
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Illustrationen, Diagramme
Content:
Supernova remnants are believed to be the source of cosmic rays with energies up to 10^15 eV that are produced within our Galaxy. The acceleration mechanism associated with the collision-less shocks in supernova remnants - diffusive shock acceleration - predicts a spectral index of the accelerated non-thermal particles of s = 2. However, measurements of non-thermal emission in radio, X-rays and gamma-rays reveal significant deviations of the particles spectral index from the canonical value of s = 2. The youngest Galactic supernova remnant G1.9+0.3 is an interesting target for next-generation gamma-ray observatories. So far, the remnant is only detected in the radio and the X-ray bands, but its young age of ≈100 yrs and inferred shock speed of ≈ 14, 000 km/s could make it an efficient particle accelerator. I performed spherical symmetric 1D simulations with the RATPaC code, in which I simultaneously solved the transport equation for cosmic rays, the transport equation for magnetic turbulence, and the hydro-dynamical equations for ...
Note:
Dissertation Universität Potsdam 2020
Additional Edition:
Erscheint auch als Druck-Ausgabe Brose, Robert From dawn till dusk Potsdam, 2020
Language:
English
Keywords:
Supernovaüberrest
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Teilchenbeschleunigung
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Kosmische Strahlung
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Hochschulschrift
DOI:
10.25932/publishup-47086
URN:
urn:nbn:de:kobv:517-opus4-470865
URL:
https://nbn-resolving.org/urn:nbn:de:kobv:517-opus4-470865
URL:
https://d-nb.info/1219579203/34
Author information:
Pohl, Martin 1965-
Author information:
Pfrommer, Christoph 1975-
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