Abstract
AbstractWe analyse the origin of the magnetic field decay in normal radio pulsars found by us in a recent study. This decay has a typical time scale ∼4×105 yr and operates in the range ∼105– few×105 yr. We demonstrate that this field evolution may be either due to the Ohmic decay related to the scattering from phonons, or due to the Hall cascade which reaches the Hall attractor. According to our analysis, the first possibility seems to be more reliable. So, we attribute the discovered field decay mainly to the Ohmic decay by phonons, which is saturated at the age of a few×105 yr when a neutron star cools down to the critical temperature below which the phonon scattering does not contribute much to the resistivity of the crust. Some role of the Hall effect and attractor is not excluded, and will be analysed in our further studies. (© 2015 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
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