I'm about to start my senior year at university pursuing a double major in physics and electrical engineering. I decided recently that I wanted to go to graduate school for physics so I started thinking about the area I would like to specialize in. My current university does most of its research in condensed matter physics and high energy particle physics; however, GR has always fascinated me, and if I could pick one topic to be an expert in, that would definitely be it (not that other areas don't interest me). The problem is, demand for research in GR is nonexistent compared with that of the topics mentioned above. This is reflected in the fact that there are only 1 or 2 graduate courses in the subject at my university. So my question is this: is it possible/feasible to specialize in GR? And if so, are there any particular universities where the department staffs a few physicists who specialize in it themselves? Or is teaching the basics of GR just an obligation for universities and no one really cares to study it beyond that?