Live Coverage of Class Transitions in the Nano Quasar GRS $1915+105$

The micro quasar GRS $1915+105$ exhibits at least 13 distinct classes of light curves. While RXTE satellite has pointed to this object about a thousand times, it has not been able to pinpoint exactly how and when a class transition actually takes place. We show that the Indian Satellite IXAE observed such class transitions several times. It is also observed that the QPO frequencies are changing during the transitions. Assuming that the transitions are caused by variations in the accretion rates, implies that a significant fraction of the matter must be nearly freely falling in order to have such transitions.