In the beginning was word, and the word was with God, and the word was God...in him was life, and that life was the light of men' John 1:1
In the beginning was a wave, and the wave was with a particle, and the wave was a particle...in the particles is light, and this light is the life of men.
One get pics of glowing bodies and 'auras' when they search 'light body'. Also some advocates of it gives the so called Kirling Photographs as light body. From these, I am lead to the following definition:
LIGHT BODY: A body that emits light that is beyond the range of ordinary perception.
This definition is ontological rather than functional. In Kirlian Photography, the light is beyond perception due to being too dim rather than vibrating at a frequency beyond visible spectrum. In proper definition, yes this 'aura' is an example of a light body.
There isn't question as to whether or not there is unseen body that interlaces with the visible one. The question is whether such a body can leave the visible one.