Journal
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume 420, Issue 2, Pages 949-956Publisher
WILEY-BLACKWELL
DOI: 10.1111/j.1365-2966.2011.19807.x
Keywords
dense matter; instabilities; magnetic fields; stars: magnetars
Categories
Funding
- NSF [AST-0098728]
- LDRD at LANL [20080130DR]
- Montana Space Grant Consortium
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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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