Quote:
Originally Posted by gregbradley
C
Greg I'd love a bit of a writeup about what type of star does this, how big is it, how much energy is there in these explosions and over what area of space does this extend. It looks brighter than the galaxy itself and would appear to be very dangerous to be anywhere near it. Radiation alone from an event like this must be dangerous to life.
Greg.
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Greg,
I could estimate the luminosity (absolute brightness) of this SN without too much trouble, but first I need some good estimates of its
apparent magnitude.
In my opinion, The SN looks brighter than the central
bulge component of this galaxy, but it is likely to be well fainter than the total light of the galaxy itself, which also includes a vast region of very faint spiral arms.
The average type II-P supernova comes in at around a Blue (B-band) luminosity of about
600 million times that of our own Sun, but individual II-P supernovae differ greatly in luminosity (by a factor of up to 6 or more)
Best Regards,
Robert