I am a Physics professor at University of California, Davis. Before I started to work here I was a Hubble Fellow at University of California, Santa Barbara, was spending my time as a Postdoctoral Research associate at Kavli Institute for Particle Astrophysics and Cosmology (KIPAC) in Stanford, California. I did my PhD and graduate research at University of Bonn, Germany. My undergraduate years I spent partly in Bonn and partly in my home country Slovenia. More about my career you can find in my CV.


  • UC Davis Chancellor Fellow
  • UC Davis Hellman Fellow, 2011
  • Hubble Fellowship, UC Santa Barbara, 2007
  • IMPRS Fellowship, MPIfR Bonn, 2002
  • BIPP scholarship, Bonn International Physics Programm, 1999
  • ZOIS scholarship (scholarship awarded by Slovenian Government) 1992

Career History

  • Ph.D., University of Bonn, Germany, 2004
  • Postdoctoral fellow at Kavli Institute for Particle Astrophysics and Cosmology, Stanford, 2004-2007
  • Hubble Fellow at UC Santa Barbara, 2007-2009
  • Assistant Professor, University of California, Davis, 2009-Present

SURFS UP: Spitzer UltRa Faint SUrvey Program

SURFSUP: Spitzer UltRa Faint SUrvey Program: Cluster Lensing and Spitzer Extreme Imaging Reaching Out to z~7 (#90009 PI Bradac, co-PI Schrabback) is a joint Spitzer and HST Exploration Science Spitzer program. It is designed to image 10 fields to extreme depths with Spitzer’s [3.6] and [4.5] bands for 550 hours total. It also includes 13 prime and 13 parallel orbits of HST time for one of the clusters with missing deep WFC3-IR and optical HST data (RCS2-2327.4-0204).
We are committed to the legacy of this program and plan to make all high-level Spitzer reduced data publicly available following publications. Below you will find links to the mosaiced images as well as PSF’s. When using the data please quote both Bradac et al. 2014 (ADS reference or link), Ryan et al. 2014 (ADS reference or link) and Huang et al. 2016 (ADS). If you have any questions please do email us (marusa at physics.ucdavis.edu).

Photometric Catalogs for HFF Survey

Photometric catalogs accompanying the paper Bradac et al. 2019 (ADS reference). If you have any questions please do email us (marusa at physics.ucdavis.edu).

Physics of California: physics class for non-science majors


Why can we actually ski, what allows us to turn, what makes our skis go fast? What are avalanches, how do they form? Physics of skiing videos!


Why is surfing in California better in winter than it is in the summer? And why do waves push us forward making surfing such a fun experience in the first place? .

Scuba Diving!

Why can we scuba dive and why do they always tell us not to hold our breath?


Why are snow flakes always six sided in nature (and eight sided only on holiday cards)?

Marine life!

Why do fish swim? Why do sharks sleep on the ocean floor?

And so much more!