http://arxiv.org/abs/2203.09187
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.
D. Ntotsikas and K. Gourgouliatos
Fri, 18 Mar 22
54/66
Comments: 2 pages, 2 figures, IAU SIMPOSIUM International Astronomical Union Proceedings Series
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