this post was submitted on 27 Sep 2023
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Betelgeuse will be going supernova in the next few decades and I've been looking at the light fluctuations.
In reality, it's probably already happened! And the light just hasn't reached us yet
Pretty insane to think about that
550 Lj, but its only expected in 1,5mio Years
[15] R Neuhäuser, G Torres, M Mugrauer, D L Neuhäuser, J Chapman, D Luge, M Cosci: Colour evolution of Betelgeuse and Antares over two millennia, derived from historical records, as a new constraint on mass and age. In: Monthly Notices of the Royal Astronomical Society. Band 516, Nr. 1, 5. September 2022, ISSN 0035-8711, S. 693–719, doi:10.1093/mnras/stac1969
1.5 million?
100,000 years is the much more commonly reported number.
Still though, should interpret my "probably" as more of a "maybe", haha
Will we get any of the radiation? Does anyone know this?
Probably not, but at most it would be detectable levels. Radiation drops at the square of distance, and there is a lot of distance.