2015/05/05 by Qi-Xiang Zou, Zou, Qi-Xiang, Xin-He Meng +1
Physics and Astronomy · #Gamma-ray bursts and supernovae #Pulsars and Gravitational Waves Research #Stellar, planetary, and galactic studies #astro-ph.CO #astro-ph.HE #astro-ph.SR #gr-qc #hep-ph
paper · pdf · doi:10.48550/arxiv.1505.00859
6ps,5figs; welcome informing
arxiv created 2015/05/05 · arxiv updated 2015/05/06
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