Force-free and twisted, relativistic neutron star magnetosphere
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 π/2 the field becomes approximately radial. This could have implications for torque variations of magnetars related to outbursts.
- Publication:
-
Neutron Star Astrophysics at the Crossroads: Magnetars and the Multimessenger Revolution
- Pub Date:
- 2023
- DOI:
- 10.1017/S1743921322001004
- arXiv:
- arXiv:2203.09187
- Bibcode:
- 2023IAUS..363..338N
- Keywords:
-
- stars: neutron;
- (magnetohydrodynamics:) MHD;
- magnetic fields;
- Astrophysics - High Energy Astrophysical Phenomena
- E-Print:
- 2 pages, 2 figures, IAU SYMPOSIUM International Astronomical Union Proceedings Series