Equilibriums of extremely magnetized compact stars with force-free magnetotunnels

Abstract

We present numerical solutions for stationary and axisymmetric equilibriums of compact stars associated with extremely strong magnetic fields. The interior of the compact stars is assumed to satisfy ideal magnetohydrodynamic (MHD) conditions, while in the region of negligible mass density the force-free conditions or electromagnetic vacuum are assumed. Solving all components of Einstein's equations, Maxwell's equations, ideal MHD equations, and force-free conditions, equilibriums of rotating compact stars associated with mixed poloidal and toroidal magnetic fields are obtained. It is found that in the extreme cases the strong mixed magnetic fields concentrating in a toroidal region near the equatorial surface expel the matter and form a force-free toroidal magnetotunnel. We also introduce a new differential rotation law for computing solutions associated with force-free magnetosphere, and present other extreme models without the magnetotunnel.

13 pages, 4 figures

References in corpus (15)

• Magnetorotational Core-Collapse Supernovae in Three Dimensions
• First 100 ms of a long-lived magnetized neutron star formed in a binary neutron star merger
• Relativistic stars with purely toroidal magnetic fields
• General relativistic neutron stars with twisted magnetosphere
• General relativistic models for rotating magnetized neutron stars in conformally flat spacetime
• Effects of spin on magnetized binary neutron star mergers and jet launching
• Modeling differential rotations of compact stars in equilibriums
• Universal relations for differentially rotating relativistic stars at the threshold to collapse
• Equilibrium solutions of relativistic rotating stars with mixed poloidal and toroidal magnetic fields
• A new view on the maximum mass of differentially rotating neutron stars
• Axisymmetric models for neutron star merger remnants with realistic thermal and rotational profiles
• Quasi-equilibrium models for triaxially deformed rotating compact stars
• Equilibrium sequences of differentially rotating stars with post-merger-like rotational profiles
• Instabilities in neutron-star postmerger remnants
• Maximum Mass Of Differentially Rotating Strange Quark Stars

Cited by in corpus (3)

• General-relativistic resistive-magnetohydrodynamics simulations of self-consistent magnetized rotating neutron stars
• Evidence of the association of repeating fast-radio-burst sources with fast-spinning super-twisted magnetars
• The Parallel Compact Object CALculator: An Efficient General Relativistic Initial Data Solver for Compact Objects