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Neutron stars in a perturbative $f(R)$ gravity model with strong magnetic fields | | Myung-Ki Cheoun
; Cemsinan Deliduman
; Can Güngör
; Vildan Keleş
; C. Y. Ryu
; Toshitaka Kajino
; Grant J. Mathews
; | | Date: |
6 Apr 2013 | | Abstract: | We investigate the effect of a strong magnetic field on the structure of
neutron stars in a model with perturbative $f(R)$ gravity. The effect of an
interior strong magnetic field of about $10^{17 sim 18}$ G on the equation of
state is derived in the context of a quantum hadrodynamics (QHD) model. We
solve the modified spherically symmetric hydrostatic equilibrium equations
derived for a gravity model with $f(R)=R+alpha R^2$. Effects of both the
finite magnetic field and the modified gravity are detailed for various values
of the magnetic field and the perturbation parameter $alpha$ along with a
discussion of their physical implications. We show that there exists a
parameter space of the modified gravity and the magnetic field strength, in
which even a soft equation of state can accommodate a large ($> 2$ M$_odot$)
maximum neutron star mass through the modified mass-radius relation. | | Source: | arXiv, 1304.1871 | | Services: | Forum | Review | PDF | Favorites | |
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