Compact stars described by a charged model
Abstract
A charged stellar model is presented by constructing a solution to the Einstein–Maxwell equations system in a spherically symmetrical static time-space. The rate of compactness for the model depends on two parameters (w,α), one of them α associated to the charge, which allows a value of compactness u≤0.520721786 higher than the neutral case. The density and pressure are regular functions, positive and monotonically decreasing and the function of charge is positive regular and monotonically increasing, its shown that the model satisfies the condition of causality, the geometry is regular and as such the model is physically acceptable. Although the model can be applicable for a variety of stars, considering a star with mass M=1M⊙ for w=0.18008215 the range of compactness is u∈[0.21250263,0.25922408] and radius R∈[5.7402,6.9480]Km, in this case the range of values for the central density is [1.66819,3.30317]1018Kg/cm3 greater than the value of the nuclear density and consistent with that expected for stars with this compactness rate.
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