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Tutorial #4: Supernova!!! (The bounce).
Water may curve a rock.
Ecclesiastes, The Old Testament
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HW#5
is now available
Please read the anouncements! |
What is happening once the iron
core of a large star is starting to collapse?
Near the end of the tutorial a demo was shown. In more detail: 1. The few Fe that form Cadmium,
or fuse in a different manner, lower the temp in the core.
What is quantum pressure? Once quantum pressure stops the iron nuclei all protons are VERY CLOSE together. A situation similar to that in regular fusion. What happens next? Protons turn to
neutrons!
More precisely:
So lots of neutrinos emerge! We actually observed some! SN 1987 A - slide show. The neutrinos interact very slightly
with regular matter, but the HUGE NUMBER of them produced in miliseconds
is able to push matter out of the supernova!!! (See HW#5).
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