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arXiv · 1812.02568

Magnetic Field of a Compact Spherical Star under f(R,T) Gravity

Safiqul Islam·Shantanu Basu
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Abstract

We present the interior solutions of distributions of magnetised fluid inside a sphere in $f(R,T)$ gravity. The magnetised sphere is embedded in an exterior Reissner-Nordström metric. We assume that all physical quantities are in static equilibrium. The perfect fluid matter is studied under a particular form of the Lagrangian density $f(R,T)$. The magnetic field profile in modified gravity is calculated. Observational data of neutron stars are used to plot suitable models of magnetised compact objects. We reveal the effect of $f(R,T)$ gravity on the magnetic field profile, with application to neutron stars, especially highly magnetized neutron stars found in X-ray pulsar systems. Finally the effective potential $V_{\rm eff}$ and innermost stable circular orbits, arising out of motion of a test particle of negligible mass influenced by attraction or repulsion from the massive center, are discussed.

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Safiqul Islam, Shantanu Basu. 2018-11-30. Magnetic Field of a Compact Spherical Star under f(R,T) Gravity. https://doi.org/10.1088/0256-307x%2F35%2F9%2F099501

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