Intermediate mass black holes: the elusive middle sibling
Strader et al. search for the elusive intermediate mass black holes in globular clusters.
What Defines a Galaxy?
“A galaxy is a gravitationally bound collection of stars whose properties cannot be explained by a combination of baryons and Newton’s laws of gravity.” (Willman & Strader, http://arxiv.org/abs/1203.2608)
Observing the Unobservable: Dark Star Clusters
Astronomers study light, but as it turns out, not all objects that we are interested in are observable in any part of the electromagnetic spectrum. In cases such as these, we have to turn to indirect detection methods.