Super-Chandrasekhar White Dwarfs with Magnetic-dependent Equation of State
Abstract
Recently, some over-luminous Ia supernovaes are found, suggesting that their progenitors are white dwarfs more massive than the Chandrasekhar limit, which perhaps result from ultra-strong magnetic field inside the white dwarfs. We present an equation of state, explicitly magnetic-dependent and analytically practicable, and observe that the change of equation of states due to magnetic field waning along radium will so significantly influence the configuration of a white dwarf as that its density does not monotonically decrease, but goes down at first, re-peaks near the crust and falls off again. As a supernovae will, in the single degenerate Ia supernovae system, leave the remnant of its companion and a neutron star (pulsar star), we point out that the observations of these objects can put our model into tests
Keywords
Cite
@article{arxiv.1505.00859,
title = {Super-Chandrasekhar White Dwarfs with Magnetic-dependent Equation of State},
author = {Qi-Xiang Zou and Xin-He Meng},
journal= {arXiv preprint arXiv:1505.00859},
year = {2015}
}
Comments
6ps,5figs; welcome informing