Hopfion-like solutions in de Sitter spacetime

We construct electromagnetic field with non-trivial topological properties on de Sitter background. The field is closely related with Hopf fibration. We analyze energy, angular momentum and topological charges for this solution. The paper is a generalization of CQG $\mathbf{\text{35}}$ (2018), no. 24, 245010 to de Sitter spacetime.