Intermediate Mass Black Hole Accretion Disks

We know that black holes are not on their own, especially the massive ones. The centres of galaxies are surrounded by gas and dust that's emitting a lot of radiation. And we think that intermediate mass black holes should also have intermediate mass accretion disks and be in mediate sized quasars. So we're looking for these as well. But i think the most exciting is this brand new way we have for looking at the universe - based on gravitational waves. When anything accelerates in the universe, it creates a change in the gravitational field, and that change ripples through space. If something is really, really big, really, really moving really, really fast, then you can actually