Axisymmetric Force-Free Magnetospheres and Theoretical Models Beyond General Relativity: Magnetic Moment of Axion Stars

DIEGO JULIO CIRILO-LOMBARDO

PHYSICS OF PARTICLES AND NUCLEI

MAIK NAUKA/INTERPERIODICA/SPRINGER

Lugar: Berlin; Año: 2019

1063-7796

The magnetosphere structure of a magnetar is considered in the context of a theory of gravity withdynamical torsion field beyond the standard General Relativity (GR) with the purpose of determining in atheoretical way the corresponding electromagnetic fields of the compact star, as well as being able to expressphenomenologically the magnetic moment of an axion star. To this end, the axially symmetric version of theGrad?Shafranov equation (GSE) is obtained in this theoretical framework where the resulting GSE solutionin the case of the magnetosphere corresponds to a stream function containing also a pseudoscalar part. As weshown before, this function solution under axisymmetry presents a complex character that could be associatedwith an axidilaton.