Format:
1 Online-Ressource (X, 117 Seiten, 15726 KB)
,
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Content:
The exceptional binary star Eta Carinae has been fascinating scientists and the people in the Southern hemisphere alike for hundreds of years. It survived an enormous outbreak, comparable to a supernova energy-wise, and for a short period became the brightest star of the night sky. From observations from the radio regime to X-rays the system's characteristics and its emission in photon energies up to ~ 50 keV are well studied today. The binary is composed of two massive stars of ~ 30 and ~ 100 solar masses. Either star drives a strong stellar wind that continuously carries away a fraction of its mass. The collision of these winds leads to a shock on each side of the encounter. In the wind-wind-collision region plasma gets heated when it is overrun by the shocks. Part of the emission seen in X-rays can be attributed to this plasma. Above ~ 50 keV the emission is no longer of thermal origin: the required plasma temperature exceeds the available mechanical energy input of the stellar winds. ...
Note:
Dissertation Universität Potsdam 2019
Additional Edition:
Erscheint auch als Druck-Ausgabe Leser, Eva Eta carinae Potsdam, 2018
Language:
English
Keywords:
Carinae
;
Doppelstern
;
Gammastrahlung
;
Hohe Energie
;
Sternwind
;
Kaskadenschauer
;
Hadron
;
Lepton
;
Hochschulschrift
DOI:
10.25932/publishup-42814
URN:
urn:nbn:de:kobv:517-opus4-428141
URL:
Volltext
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URL:
Volltext
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URL:
https://nbn-resolving.org/urn:nbn:de:kobv:517-opus4-428141
URL:
https://d-nb.info/121840471X/34
Author information:
Kowalski, Marek 1974-
Author information:
Wilms, Jörn 1969-
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