Journal article
Magnetically confined mountains on accreting neutron stars in general relativity
PHB Rossetto, J Frauendiener, R Brunet, A Melatos
Monthly Notices of the Royal Astronomical Society | OXFORD UNIV PRESS | Published : 2023
Abstract
The general relativistic formulation of the problem of magnetically confined mountains on neutron stars is presented, and the resulting equations are solved numerically, generalizing previous Newtonian calculations. The hydromagnetic structure of the accreted matter and the subsequent magnetic burial of the star's magnetic dipole moment are computed. Overall, it is observed that relativistic corrections reduce the hydromagnetic deformation associated with the mountain. The magnetic field lines are curved more gently than in previous calculations, and the screening of the dipole moment is reduced. Quantitatively, it is found that the dimensionless dipole moment (md) depends on the accreted ma..
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Grants
Awarded by Division of Sciences, University of Otago
Funding Acknowledgements
We thank Arthur Suvorov, Maxim Priymak, and Donald Payne for providing access to the Grad-Shafranov solver upon which we have based the solver used in this paper, and for their assistance in the setup of the original code. This work received financial support from the Catalyst Fund provided by the New Zealand Ministry of Business, Innovation and Employment and administered by the Royal Society Te Aparangi; the Division of Science of the University of Otago, New Zealand; the University of Otago Postgraduate Publishing Bursary (Doctoral); and the Australian Research Council Centre of Excellence for Gravitational Wave Discovery (OzGrav), through project number CE170100004.