The magnetosphere structure of compact objects is considered in the context of a theory of gravity with dynamical torsion field beyond standard General Relativity (GR). To this end, a new spherically symmetric solution is obtained in this theoretical framework, physically representing a compact object of pseudoscalar fields (for example, axion field). The axially symmetric version of the Grad-Shafranov equation (GSE) is also derived in this context, and used to describe the magnetosphere dynamics of the obtained "axion star". The interplay between high-energy processes and the seed magnetic field with respect to the global structure of the magnetosphere is briefly discussed. © 2019 World Scientific Publishing Company.
Documento: | Artículo |
Título: | Beyond general relativity models, magnetosphere structure and dark matter stars |
Autor: | Cirilo-Lombardo, D.J.; Minotti, F.O. |
Filiación: | Instituto de Fisica Del Plasma (INFIP), CONICET, Universidad de Buenos Aires, Buenos Aires, Argentina Departamento de Fisica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina Bogoliubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, Dubna (Moscow Region), 141980, Russian Federation |
Palabras clave: | dark matter stars; magnetosphere structures; Non Riemannian manifolds; topology |
Año: | 2019 |
DOI: | http://dx.doi.org/10.1142/S0219887819500646 |
Título revista: | International Journal of Geometric Methods in Modern Physics |
Título revista abreviado: | Int. J. Geom. Methods Mod. Phys. |
ISSN: | 02198878 |
Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02198878_v_n_p_CiriloLombardo |