The Cataclysmic Death of Stars
explosion, says Adam Burrows of the University of Arizona. Turns out it's not so simple.
Simulating a supernova gobbles enormous amounts of computer power, and even the largest
supercomputers can't fully reproduce an exploding star in three dimensions. But over the years
the models have improved, and the shock wave scenario has fallen apart.
Researchers found that less than a thousandth of a second after the shock wave is generated, a
flood of tiny, nearly massless particles called neutrinos escapes from the center of the star. The
neutrinos, born in the collapsing core, drain energy from the shock wave. The shock stalls, and--
at least in the computer--the supernova is a dud.
Now Burrows and his colleagues are working with a computer model powerful enough to
simulate how the core shakes and churns during the collapse, and they've finally seen how a
collapsing star could turn around and explode. The turbulent infalling gas starts shaking the core,
causing it to pulsate
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