Strong cosmic censorship for solutions of the Einstein–Maxwell field equations with polarized Gowdy symmetry
A proof of strong cosmic censorship is presented for a class of solutions of the Einstein–Maxwell equations, those with polarized Gowdy symmetry. A key element of the argument is the observation that by means of a suitable choice of variables the central equations in this problem can be written in a form where they are identical to the central equations for general (i.e. non-polarized) vacuum Gowdy spacetimes. Using this, it is seen that the deep results of Ringstr¨ om on strong cosmic censorship in the vacuum case have implications for the Einstein–Maxwell case. Working out the geometrical meaning of these analytical results leads to the main conclusion.