期刊
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷 420, 期 2, 页码 949-956出版社
WILEY-BLACKWELL
DOI: 10.1111/j.1365-2966.2011.19807.x
关键词
dense matter; instabilities; magnetic fields; stars: magnetars
资金
- NSF [AST-0098728]
- LDRD at LANL [20080130DR]
- Montana Space Grant Consortium
We investigate a thermoresistive instability in the outer crusts of magnetars wherein a perturbation in temperature increases ohmic heating. We show that magnetars of characteristic age tage similar to 104 yr are unstable over time-scales as short as days if strong current sheets are present in the outer crust. This instability could play an important role in the thermal and magnetic field evolution of magnetars, and may be related to bursting activity in magnetars.
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