Ambipolar Heating of Magnetars

Abstract

Magnetars, neutron stars thought to be with ultra-strong magnetic fields of $10^{14-15}$ G, are observed to be much hotter than ordinary pulsars with $\sim 10^{12}$ G, and additional heating sources are required. One possibility is heating by the ambipolar diffusion in the stellar core. This scenario is examined by calculating the models using the relativistic thermal evolutionary code without making the isothermal approximation. The results show that this scenario can be consistent with most of the observed magnetar temperature data.

arXiv comment12 pages, 4 figures, 1 table. Accepted by the Astrophysical Journal on February 9, 2023

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Cited by in corpus (4)

• Magnetic, thermal and rotational evolution of isolated neutron stars
• Impact of Multiple Phase Transitions in Dense QCD on Compact Stars
• Validating and improving two-fluid simulations of the magnetic field evolution in neutron star cores
• Numerical simulation of electron magnetohydrodynamics with Landau-quantized electrons in magnetar crusts