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Force-free and twisted, relativistic neutron star magnetosphere

Published online by Cambridge University Press:  27 February 2023

Dimitris Ntotsikas Open the ORCID record for Dimitris Ntotsikas [Opens in a new window]  and
Konstantinos N. Gourgouliatos Open the ORCID record for Konstantinos N. Gourgouliatos [Opens in a new window]
Dimitris Ntotsikas
Affiliation:
University Of Patras, Department Of Physics, Patras, 26504, Greece www.astro.upatras.gr email: d.ntotsikas@upnet.gr
Konstantinos N. Gourgouliatos
Affiliation:
University Of Patras, Department Of Physics, Patras, 26504, Greece www.astro.upatras.gr email: d.ntotsikas@upnet.gr
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Abstract

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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 π/2 the field becomes approximately radial. This could have implications for torque variations of magnetars related to outbursts.

Keywords

stars: neutron(magnetohydrodynamics:) MHDmagnetic fields
Type
Poster Paper
Information
Proceedings of the International Astronomical Union , Volume 16 , Symposium S363: Neutron Star Astrophysics at the Crossroads: Magnetars and the Multimessenger Revolution , June 2020 , pp. 338 - 339
Creative Commons
Creative Common License - CCCreative Common License - BY
This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited.
Copyright
© The Author(s), 2023. Published by Cambridge University Press on behalf of International Astronomical Union

References

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