Apparent horizons in Clifton-Mota-Barrow inhomogeneous universe

From Clifton-Barrow spherically symmetric to axially symmetric solution in f(R)-gravity

Starting from Clifton's spherical static solution for f(R)-gravity we can derive axial symmetric solutions using a methods that takes the advantage of a complex coordinate transformation. The new solutions are generated by applying the Newman-Janis algorithm previously used to transform any static spherically symmetric into axially metric in General Relativity