Gravitational waves from the collapse of rotating stellar cores

Abstract

The gravitational quadrupole (and also the octupole and the hexadecapole) waves resulting from four different numerical collapse models for rotating 1.36 M ○. −iron cores of 20 M ○. −stars are calculated. The gravitational dynamics of each core collapse is treated at the Newtonian level since the highest appearing values of the central density and the velocity are 2.6 10 14 g/cm 3 and 8 10 9 cm/s, respectively