Magnetic field of the system ``neutron star plus wormhole’’ with a dilatonic scalar field

Authors

  • A. Aringazin Institute of Basic Research, L.N. Gumilev Eurasian National University, Astana, Kazakhstan
  • V. Dzhunushaliev Institute of Basic Research, L.N. Gumilev Eurasian National University, Astana, IETP, Al Farabi Kazakh National University, Almaty, Kazakhstan; Institute of Physical and Technical Problems and Materials Science of the National Academy of Sciences of the Kyrgyz Republic, Bishkek, Kyrgyzstan
  • V. Folomeev Institute of Basic Research, L.N. Gumilev Eurasian National University, Astana, Kazakhstan 2IETP, Al Farabi Kazakh National University, Almaty, Kazakhstan; Institute of Physical and Technical Problems and Materials Science of the National Academy of Sciences of the Kyrgyz Republic, Bishkek, Kyrgyzstan

Keywords:

wormhole, scalar field, neutron stars, magnetic field

Abstract

The mixed configuration with a nontrivial spacetime topology consisting of a wormhole filled with a strongly magnetized neutron fluid is considered. The nontrivial topology is provided by a ghost scalar dilatonic field interacting nonminimally with a magnetic field. The neutron fluid is described by a realistic Sly equation of state. The magnetic field is modeled in the form of an axisymmetric poloidal magnetic field created by toroidal electric currents. The energy density of the magnetic field is assumed much to be smaller than those of scalar and gravitational fields. Comparing such mixed configurations with ordinary neutron stars, the question of the influence of the nontrivial topology and the dilatonic interaction on the structure of the interior magnetic field is studied. The radial and tangential components of the magnetic field strength are calculated. Distributions of the magnetic field equipotential lines for ordinary neutron star and the mixed system under consideration are plotted.

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Published

2017-10-10

Issue

Vol. 61 No. 2 (2017): Recent Contributions to Physics

Section

Theoretical Physics. Nuclear and Elementary Particle Physics. Astrophysics

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