Journal
ASTROPHYSICS AND SPACE SCIENCE
Volume 333, Issue 2, Pages 427-435Publisher
SPRINGER
DOI: 10.1007/s10509-011-0664-3
Keywords
Magnetar; Superhigh magnetic fields; Electron capture rate
Categories
Funding
- National Basic Research Program of China (973 Program) [2009CB824800]
- Chinese Academy Sciences [KJCX2-YW-T09]
- West Light Foundation of CAS [280802]
- Xinjiang Natural Science Foundation [2009211B35]
- NSFC [10173020, 10673021, 10773005, 10778631, 10903019, 11003034]
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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 similar to(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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