Hydromagnetic instabilities in protoneutron stars
Astrophysics
2009-11-07 v1
Abstract
The stability properties of newly born neutron stars, or proto--neutron stars, are considered. We take into account dissipative processes, such as neutrino transport and viscosity, in the presence of a magnetic field. In order to find the regions of the star subject to different sorts of instability, we derive the general instability criteria and apply it to evolutionary models of PNSs. The influence of the magnetic field on instabilities is analyzed and the critical magnetic field stabilizing the star is obtained. In the light of our results, we estimate of the maximum poloidal magnetic field that might be present in young pulsars or magnetars.
Cite
@article{arxiv.astro-ph/0203459,
title = {Hydromagnetic instabilities in protoneutron stars},
author = {Juan A. Miralles and Jose A. Pons and V. Urpin},
journal= {arXiv preprint arXiv:astro-ph/0203459},
year = {2009}
}
Comments
18 pages, 4 figures, to appear in Astrophysical Journal