There's no such thing, in order for there to be a reaction like photons of light for an image, or a wave of energy like audio, there must be an equal and opposite action. That requires mass and energy, the idea of a ghost is a metaphor for the memory you hold dear of someone and how it affects you. Not a physical object.
Reality tv rotts your brain pretty hard. Don't watch ghost stuff, else the levels of stupid will give me frontal lobe hemorrhages.
This belongs in your journal since there is no question and discussion. Also your insults towards people that do believe in the paranormal are not called for.