Columbia Astronomy Professor, Zoltan Haiman, and Columbia Astrophysics Postdoc, Jordy Davelaar, have discovered a way of sizing up the ‘shadows’ of two supermassive black holes in the process of colliding, giving astronomers a potentially new tool to measure black holes in distant galaxies and test alternative theories of gravity.
For more information, see the articles on the Columbia news site and at APS.