In reply to Axil Axil's message of Thu, 3 Jul 2014 02:21:34 -0400: Hi, ...but it's the light that we are measuring, so affects that delay the propagation of light are significant.
>More... > >here is another very good simulation of magnetic effects in a supernova > >http://www.space.com/25771-big-bang-universe-supernova-simulations.html > > > > >On Thu, Jul 3, 2014 at 2:11 AM, Axil Axil <janap...@gmail.com> wrote: > >> More... >> >> http://vimeo.com/27247968 >> >> This simulation depicts a exploding star that produces load of magnetic >> field lines that can disrupt the surface of the exploding star. >> >> >> On Thu, Jul 3, 2014 at 1:52 AM, Axil Axil <janap...@gmail.com> wrote: >> >>> 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 >>>> >>>> >>> >> Regards, Robin van Spaandonk http://rvanspaa.freehostia.com/project.html
