Magnetorotational iron core collapse

Spherically symmetric stellar collapse models have not been evolving the expected supernovae. The physics of these models seems to be well understood, and numerical solutions have become quite sophisticated. Therefore, there may be something fundamental missing from these models. Accordingly, we have followed the collapse of a magnetic and rotating iron core of an evolved 15 M/sub sun/ star using a two-dimensional magnetohydrodynmaics numerical model. Nonmagnetic and nonrotating iron cores are typically the evolved quantitites of spherically symmetric models seeking to explain Type II supernovae