Astronomy / Space 'Zombie' star survives supernova

Wild! :eek:

Is that a natural phenomenom, or is it sign of a Kardashev type 3 civilization waging war or sending a message?
 
I remember a couple of years ago when they thought that SN 2012Z could be evidence for a 1aX supernova event at about the same time as iPTF14hls, was identified as a possible candidate. It's exciting that there is such an observation, and I expect others to be discovered in the future.Curious as to how to account for the high levels of Hydrogen (which you would expect by now to have been mostly exhausted) in such a massive, 100 solar-mass star that is otherwise showing signs of 'death throes'.https://swift.gsfc.nasa.gov/cgi-bin...sa.gov/cgi-bin/sdc/list?seq=sw00033788003.013
 
Pulsational Pairt instability is when a vertex is formed of perturbative scattering matrix between sufficiently high frequency photons propagates electron-positron pairs. As such, there is a pressure change as the particles attract each other both electromagnetically and in principle, gravitationally - scaled up to the number of events within the core and this sudden collapse is a mammoth 'hiccough' as the outer layers are expelled at a phenomenal rate.
 
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