I am a mostly theoretical cosmologist, specializing in gravitational lensing, and in particular, in and have recently become very interested in extracting additional information out of weak lensing signals of galaxy clusters. I've also gotten interested in strongly lensed systems as well. See my selected publication list below or take a look at my CV for some recent projects.
I have also become very interested in the interface between cosmology and particle physics in the early universe, and my popular writing has centered largely on these questions. I am the author of two popular science books, and am currently in the process of completing work on a third, "The Standard Model in a Nutshell," to be published by Princeton University Press later this year.
Current Administrative Appointments
While a list of classes doesn't quite paint the complete picture, these are a list of courses I've taught and in most cases developed since arriving at Drexel in 2001. Website links are only guaranteed to be active going back a year or so.
I've put out a lot of popular material, but here are some of my especially high-impact work. You can get a more complete list of links at my blog and get frequent updates on my twitter and Facebook feeds.
A complete list of my articles can be found in my CV or via ADS. Below, I've included a few that are most relevant to my current research, along with some of my most high-impact work.