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Ambipolar decay of magnetic field in magnetars and the observed magnetar activities - MaRDI portal

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Ambipolar decay of magnetic field in magnetars and the observed magnetar activities

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Publication:5067239

DOI10.1142/S0217732321501443zbMATH Open1487.85009arXiv2009.09649OpenAlexW3181837232MaRDI QIDQ5067239

Author name not available (Why is that?)

Publication date: 1 April 2022

Published in: (Search for Journal in Brave)

Abstract: Magnetars are comparatively young neutron stars with ultra-strong surface magnetic field in the range 1014−16 G. The old neutron stars have surface magnetic field some what less sim108 G which clearly indicates the decay of field with time. One possible way of magnetic field decay is by ambipolar diffusion. We describe the general procedure to solve for the ambipolar velocity inside the star core without any approximation. With a realistic model of neutron star we determine the ambipolar velocity configuration inside the neutron star core and hence find the ambipolar decay rate and time scale which is consistent with the magnetar observations.


Full work available at URL: https://arxiv.org/abs/2009.09649



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