bradford benson

Assistant Professor


I am an experimental cosmologist and particle astrophysicist who makes measurements of the temperature and polarization anisotropy of the cosmic microwave background (CMB), clusters of galaxies, and large-scale structure.  I develop and build instrumentation that uses low-temperature cryogenics, SQUID readout electronics, and superconducting detectors.  

I am interested in the following cosmological questions:  What is the nature of dark energy?  Did inflation happen and what physics was responsible for it?  Are there unknown particle species that we can detect cosmologically?  What is the mass of the neutrino?  What can the growth of cosmic structures tell us about the content and evolution of the universe?  When and how was the universe re-ionized?  I primarily study the cosmic microwave background (CMB) and clusters of galaxies to try and answer these questions. 

Galaxy clusters are also one of the few families of objects in which we can observe the distribution of the three dominant matter components in the universe; stars and galaxies, hot gas, and dark matter.  Through multi-wavelength observations, we can learn about the interplay of these components; including the history of galaxy formation and metal production, and feedback from active galactic nuclei.


Scientific Interests

Bradford Benson

Kavli Institute for Cosmological Physics

933 East 56th Street

Chicago, IL 60637


Contact Info

(Top Left) - Me working on the SPT focal plane; (Top Right) The South Pole Telescope (SPT);

(Bottom Left) - 2500 sq deg 100 GHz map from the SPT; (Bottom Right) - Me at the South Pole