Here's a beautiful picture taken by the Swedish photographer Göran Strand from Northern Sweden. Here's what he had to say about the picture.
"A few nights ago there were some short but intense auroras visible here in northern Sweden. I went to lake north of Östersund to get some nice reflections in the water and to my luck, there was no wind either, so the water was totally calm. I really like the way the big stones floats in the aurora colored water."
You can see more of Göran's pictures at: http://www.astrofotografen.se