Ghost Pictures: Ghost by Son

Karen from Concord, New Hampshire sent us some ghost pictures of energy around her son. The first pic might have been dismissed, due to possible camera flash reflection (but the strap is on the right side of the camera, and not the left). Also the arc of light is amazing, and the possible dark shadow above her son's head is intriguing. Is it possible her son has a ghost or spirit of a loved one watching over him?

"(Picture 1) This is a picture taken with an HP digital camera. I took this picture in June when my son was napping and noticed this light thing. I took a second photo and the light was gone. (Picture 2) This is a picture of my son sleeping and I noticed this arch of light. (Picture 3 and 4) There is a black shadowy thing next to my son's head."