Looks like some magnetic tube that is pushing the plasma away from the region inside it. Can't be the right terminology but that's how I'd describe it.
Any info on what time that image is and what band and satellite? I could try to get some more data and stuff on it.
I can't quite remember what the gas is called but isn't there large traces of "this Gas", that usually belongs to a gas giant and isn't found on stars, on the sun? This maybe some of the Gas from an inner Gas Giant, that maybe have been slingshot in.http://en.wikipedia.org/wiki/Vulcan_%28hypothetical_planet%29 (http://en.wikipedia.org/wiki/Vulcan_%28hypothetical_planet%29)
And I can't find the source, it was something like "Perhaps a new planet."