Progenitors of Magnetars and Hyperaccreting Magnetized Disks
Abstract
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 is born, its dipole magnetic fields in turn have a major influence on the following accretion. The decay of its toroidal field can fuel the persistent X-ray luminosity of either an SGR or AXP; however the decay of only the poloidal field is insufficient to do so.
- Publication:
-
Feeding Compact Objects: Accretion on All Scales
- Pub Date:
- February 2013
- DOI:
- 10.1017/S1743921312020340
- arXiv:
- arXiv:1210.6978
- Bibcode:
- 2013IAUS..290..347X
- Keywords:
-
- Magnetar;
- accretion disk;
- gamma ray bursts;
- magnetic fields;
- Astrophysics - High Energy Astrophysical Phenomena
- E-Print:
- 2 Pages, Proceedings of IAUS 290 "Feeding Compact Objects: Accretion on All Scales", C. M. Zhang, T. Belloni, M. Mendez &