Not sure on that but the sun is due to reverse poles in 2012.
www.polereversal.com...
But bearing that in mind please check out this thread and read NASA's site that day.
www.abovetopsecret.com...
If Sag A* really does harbor a black hole, it ought to shine as an X-ray source. The X-rays would come from hot gas in an accretion disk swirling into the dense gravitational field of the hole. Previous X-ray satellites lacked the combined resolution and sensitivity to make this basic test. But now, thanks to the Chandra X-ray Observatory, astronomers finally have the data they've been waiting for.