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arXiv · 2203.09187

Force-free and twisted, relativistic neutron star magnetospheres

Dimitris Ntotsikas·Konstantinos N. Gourgouliatos
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Abstract

In this poster we present the structure of an axisymmetric, force-free magnetosphere of a twisted, aligned rotating dipole within a corotating plasma-filled magnetosphere. We explore various profiles for the twist. We find that as the current increases more field lines cross the light cylinder leading to more efficient spin-down. Moreover, we notice that the twist cannot be increased indefinitely and after a finite twist of about ${\pi}/2$ the field becomes approximately radial. This could have implications for torque variations of magnetars related to outbursts.

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Dimitris Ntotsikas, Konstantinos N. Gourgouliatos. 2022-03-17. Force-free and twisted, relativistic neutron star magnetospheres. https://doi.org/10.1017/s1743921322001004

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