Oscar Agertz

KICP Fellow

Ph.D., Physics, University of Zurich, 2010
Contact Information
Phone: (773) 702-4314
Location: LASR 134
Email: agertzkicp.uchicago.edu
WWW: Web Site
Disk formation and the origin of clumpy galaxies at high redshift.

Evolution of the gas density (blue), temperature (red) and metallicity (green).
While my scientific interest is broad, the main focus of my research is studying the formation and evolution of galaxies using state- of-the-art numerical methods.
Understanding the origin of the diverse morphologies of galaxies is one of the great challenges in astrophysics. Understanding the 14 billion years of evolution involves, to some degree, all fields of physics. Thanks to the advancement of numerical algorithms, parallel implementations and powerful supercomputers, this highly non-linear problem has been widely studied in the field of computational astrophysics during the last decades. The point has now been reached where we, for the first time, can study in detail the complex assembly of galaxies, from hierarchical merging and bimodal gas accretion at high redshift, to the quiescently evolving systems we observe in the nearby Universe. However, many unsolved problems remain in the field of galaxy formation such as baryonic angular momentum loss during the disk assembly and the "missing satellite problem". The nature and possible solutions to these problems often include various forms of stellar or AGN feedback which, apart from not being well understood or properly accounted for in numerical work, is strongly entangled with numerical resolution. As modern simulations are about to resolve the true star forming structures (i.e. giant molecular clouds) on scales of ten parsecs in a cosmological context, future development in this exciting area is crucial.
Talks, Lectures, & Workshops

KICP Publications
2013 | 2011

Latest Journal Publications
  1. "Toward a Complete Accounting of Energy and Momentum from Stellar Feedback in Galaxy Formation Simulations", The Astrophysical Journal, Volume 770, Issue 1, article id. 25, 26 pp. (2013) (Jun 2013)
  2. "The formation of disc galaxies in a ΛCDM universe", Monthly Notices of the Royal Astronomical Society, Volume 410, Issue 2, pp. 1391-1408 (Jan 2011)

Latest Conference Proceedings
  1. "Mapping the Extended Tail of the Magellanic Stream", American Astronomical Society, AAS Meeting #221, #404.04 (Jan 2013)

Past Visitors:
  1. Philip Hopkins, UC Berkeley (2012)
  2. Karl Joakim Rosdahl, CRAL - Observatoire de Lyon (2012)
  3. Oliver Zahn, University of California, Berkeley (2012)
  4. Frank van den Bosch, Yale University (2011)