MODERN PHYSICS LETTERS A, cilt.26, sa.20, ss.1487-1494, 2011 (SCI-Expanded)
We investigate non-minimal R-beta F-2-type couplings of electromagnetic fields to gravity. We derive the field equations by a first-order variational principle using the method of Lagrange multipliers. Then we present various static, spherically symmetric solutions describing the exterior fields in the vicinity of electrically charged massive bodies.