1210.6978 (Yi Xie et al.)

Progenitors of Magnetars and Hyperaccreting Magnetized Disks    [PDF]

Yi Xie, Shuang-Nan Zhang

We propose that a magnetar could be formed during the core collapse of massive stars or coalescence of two normal neutron stars, through collecting and inheriting the magnetic fields magnified by hyperaccreting disk. After the magnetar born, its dipole magnetic fields in turn have a major influence on the following accretion. The decay of toroidal field can fuel the SGRs and AXPs, however only the poloidal field is not enough.

View original: http://arxiv.org/abs/1210.6978