Astrophysical observations indicate that approximately 80% of the matter in the universe is made up of dark matter, something unlike the ordinary matter that makes up everything we see around us. Some theoretical models suggest this dark matter might be made up of coherent fields that form structures much larger than the Earth. As the Earth passes through such a dark matter field it might be detectable via an interaction with the spins of ordinary matter. This talk will describe two experiments, the Global Network of Optical Magnetometers to Search for Exotic Physics (GNOME) and the Search for Non-Interacting Particles Experiment (SNIPE), that are looking for dark matter using networks of magnetometers.

Join us on Friday, Nov. 14, for this exciting presentation from Jason Stalnaker, professor of physics at Oberlin College. Lunch will be available in Hayes 216 from 11:45 a.m. to 12:15 p.m., and the presentation will begin in Hayes 211/213 at 12:10 p.m. We hope to see you there!