There is an assumption that energy is transferred from the core of the sun to the surface via photons. This is most likely not true.
Magnetic field lines may well move most of the energy from inside the sun to the surface where it excites the corona to very high temperatures in the millions of degrees. The surface of the sun is only 5505 °C. However, the temperature increases very steeply from 5505 degrees to a few million degrees in the corona, in the region 500 kilometers above the photosphere. This is the opposite for what would be expected for heat transfer through black body radiation. The same EMF heat transfer mechanism could well be true for supernova explosions. The surface of the exploding star could be blow off instantaneously through an intense pulse of EMF. On Thu, Jul 3, 2014 at 1:04 AM, Eric Walker <eric.wal...@gmail.com> wrote: > On Wed, Jul 2, 2014 at 2:39 PM, <mix...@bigpond.com> wrote: > > That the estimates for the time taken in the Sun vary between 10000 & >> 170000 >> years, then this tells me that such estimates are not on a very sound >> footing. >> If the difference is a factor of 17 for a constant star like the Sun, >> then I'm >> surprised that they only got if wrong by a factor of 2 for the supernova. >> > > Good point about the lack of precision in the estimates. I used a > footnote but failed to include the original reference (it was to Wikipedia > [1]). The Wikipedia article in turn references an article by NASA [2]. > > Eric > > > [1] http://en.wikipedia.org/wiki/Sun > [2] http://sunearthday.nasa.gov/2007/locations/ttt_sunlight.php > >
