Evolution of superhigh magnetic fields of magnetars |
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| Authors: | Z F Gao N Wang J P Yuan L Jiang D L Song E L Qiao |
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| Institution: | 1.Urumqi Observatory,NAOC,Urumqi,China;2.Graduate University of the Chinese Academy of Science,Beijing,China;3.Department of Astronomy,Nanjing University,Nanjing,China;4.XinJiang Education Institute,Urumqi,China;5.The Information Engineering University,ZhengZhou,China;6.Yunnan Observatory,Kunming,China |
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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 3
P
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 ∼(106–107) 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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