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arXiv · 1312.2728

Evolution of superhigh magnetic fields of magnetars

Z. F. Gao·N. Wang·J. P. Yuan·L. Jiang·D. L. Song·E. L. Qiao
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Abstract

In this paper, we consider the effect of Landau levels on the decay of superhigh magnetic fields of magnetars. Applying ${}^3P_2$ anisotropic neutron superfluid theory yield a second-order differential equation for a superhigh magnetic field $B$ and its evolutionary timescale $t$. The superhigh magnetic fields may evolve on timescales $\sim (10^{6}-10^{7})$ yrs for common magnetars. According to our model, the activity of a magnetar may originate from instability caused by the high electron Fermi energy.

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Z. F. Gao, N. Wang, J. P. Yuan, L. Jiang, D. L. Song, E. L. Qiao. 2013-12-10. Evolution of superhigh magnetic fields of magnetars. https://doi.org/10.1007/s10509-011-0664-3

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