Death of a star
Two mechanisms:1. Thermonulear Supernova:
Mass less then 8 sun masses Type 1a Supernova
2. Core Collapse Supernova:Mass min. 8 sun masses super dense objekts
What is a supernova?
written down seen with the naked eye paintings compared the brightness
History of supernova observation
1572; Tycho Brahe◦ De nova et nullius aevi memoria prius visa stella (Latin for
"Concerning the new and previously unseen star")
1604; Kepler◦ De Stella nova in pede Serpentarii (Latin for "On the new star in
Ophiuchus's foot", “)
History of supernova observation
Change of brightness◦ Brightness of 10 billion suns◦ Energy output of 1044 jouls
How do we observe?
SN 1994D
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