Button to scroll to the top of the page.
Boylan-Kolchin, Mike

Mike Boylan-Kolchin

Department of Astronomy

Cosmology and galaxy formation; dark matter physics; near-field cosmology; high-redshift galaxies; globular clusters


Phone: 512-471-3343

Office Location
PMA 16.324

Ph.D (Physics), University of California, Berkeley (2006)
B.A. (Astrophysics), Columbia University (2001)


Professor Mike Boylan-Kolchin is a theoretical astrophysicist who works on galaxy formation theory and its interface with cosmology. He works on a variety of questions related to dark matter, cosmological structure formation, and galaxy formation physics across cosmic time. His work combines numerical simulations, analytic models, and observations.

Cosmology and galaxy formation, including:

  • the formation, evolution, and structure of galaxies and dark matter halos
  • the nature of dark matter
  • near-field cosmology
  • high-redshift galaxy formation
  • globular cluster formation and evolution
  • cosmological parameters and tensions
  • numerical simulations

Some Publication Highlights (for a full listing, see NASA ADS or the list here [pdf] or here [html])

M. Boylan-Kolchin, Stress Testing ΛCDM with High-redshift Galaxy Candidates; Nature Astronomy, 7, 731 (2023)

M. Boylan-Kolchin & D. Weisz, Uncertain Times: The Redshift–Time Relation from Cosmology and Stars; MNRAS, 505, 2764 (2021)

M. Boylan-Kolchin, Galaxy Motions Cause Trouble for Cosmology; Science, 359, 520 (2018)

M. Boylan-Kolchin, The Globular Cluster - Dark Matter Halo Connection; MNRAS, 472, 3120 (2017)

J. Bullock & M. Boylan-Kolchin, Small-Scale Challenges to the ΛCDM Paradigm; ARAA, 55, 343 (2017)

M. Boylan-Kolchin, D. Weisz, J. Bullock, M. Cooper, The Local Group: The Ultimate Deep FieldMNRAS, 462, L51  (2016)

M. Boylan-Kolchin, J. Bullock, M. Kaplinghat, Too Big to Fail? The Puzzling Darkness of Massive Milky Way Subhaloes; MNRAS, 415, L40 (2011)

M. Boylan-Kolchin, V. Springel, S. D. M. White, A. Jenkins, G. Lemson, Resolving Cosmic Structure Formation with the Millennium-II Simulation; MNRAS, 398, 1150 (2009)

National Science Foundation CAREER (Faculty Early Career Development) Award (2018)

Board of Visitors Teaching Excellence Award (2019)

Web of Science Highly Cited Researcher (2021)