Evolution of external magnetic fields of the stars during their gravitational collapse

The evolution of external electromagnetic field of the stars during their gravitational collapse has been considered. As follows from the calculations, the external magnetic and electrical field of the stars grows very strong during the gravitational collapse. By decreasing radius more than by three orders, the magnetic field increases by millions of times. The external magnetic field of a star increases by billions of times at the final stage of gravitation collapse, reaching values of 1012 Gs near stellar surface. During the collapse the electrical field also increases. At the final stage of the collapse, the electric field increases by billions of times.