Gürtuğ, ÖzayHalilsoy, MustafaGürtuğ, Özay2024-07-122024-07-1220010556-2821https://arxiv.org/abs/gr-qc/0010112https://journals.aps.org/prd/abstract/10.1103/PhysRevD.64.084023https://hdl.handle.net/20.500.12415/3282Single pulse of null dust and colliding null dusts both transform a regular horizon into a space-like singularity in the space of colliding waves. The local isometry between such space-times and black holes extrapolates these results to the realm of black holes. However, inclusion of particular scalar fields instead of null dusts creates null singularities rather than space-like ones on the inner horizons of black holes.enAttribution-NonCommercial 3.0 United Statesinfo:eu-repo/semantics/openAccessArticle864