Joshua A. Frieman


Ph.D., Physics, University of Chicago, 1985
Contact Information
Phone: (773)702-7971
Location: TAAC 24
WWW: Web Site
The 2.5-meter telescope at Apache Point Observatory, named the Sloan Foundation Telescope in recognition of the pivotal and generous support of the Alfred P. Sloan Foundation through all phases of the SDSS.
Josh Frieman is a senior staff member (Scientist III) in the Theoretical Astrophysics group at Fermilab and the Fermilab Center for Particle Astrophysics. He is also Professor of Astronomy and Astrophysics at the University of Chicago, where he is a member of the Kavli Institute for Cosmological Physics.
Frieman earned a B.Sc. degree from Stanford (1981) and a PhD in Physics from the University of Chicago (1985). After a postdoc in the SLAC Theory Group, he joined the scientific staff at Fermilab in 1988. He served as Head of the Theoretical Astrophysics Group from 1994 to 1999. He is a Fellow of the American Physical Society and of the American Association for the Advancement of Science and a Trustee of the Aspen Center for Physics. He has served on the Executive Committee of the APS Divison of Astrophysics, on the Particle Physics Project Prioritization Panel (P5) of HEPAP, on the Astro 2010 Decadal Survey Committee, and on the Astronomy and Astrophysics Advisory Committee (AAAC).

Frieman's research centers on theoretical and observational cosmology, including studies of the nature of dark energy, the early Universe, gravitational lensing, the large-scale structure of the Universe, and supernovae as cosmological distance indicators. The author of over 230 publications, he led the Sloan Digital Sky Survey (SDSS-II) Supernova Survey, which discovered over 500 type Ia supernovae for cosmology studies, and served as chair of the SDSS Collaboration Council. He is a founder of and currently serves as Director of the Dark Energy Survey, a collaboration of over 120 scientists from 20 institutions on 3 continents, which is building a 570-Megapixel camera to carry out a wide-field survey on the Blanco 4-meter telescope at Cerro Tololo Inter-American Observatory in Chile to probe the origin of cosmic acceleration.

Ongoing Scientific Projects:

Past Scientific Projects: Nearby Supernova Factory (SNfactory)
KICP Highlights & News

Talks, Lectures, & Workshops

Past Students

GRADUATE: Felipe Marin (2010), Carlos E. Cunha (2008), Benjamin E. Dilday (2008), David Johnston (2003), Jonathan Mitchell (2003), Craig Wiegert (2003)

UNDERGRADUATE: Alex Lanzano (2013), Rebecca Pierce (2013)
Currently in Committees
  • Wednesday Colloquium committee
  • Appointments committee
  • PFC Executive committee

KICP Publications
2015 | 2014 | 2013 | 2012 | 2011 | 2010 | 2009 | 2008 | 2007 | 2006 | 2005 | 2004 | 2003 | 2002 | 2001

Latest Journal Publications
  1. "The LMC geometry and outer stellar populations from early DES data", arXiv:1502.05050 (Feb 2015)
  2. "SALT Classification of DES Supernova Candidates", The Astronomer's Telegram, #7031 (Feb 2015)
  3. "Discovery and Classification of 5 SN from the Dark Energy Survey with VLT", The Astronomer's Telegram, #7022 (Feb 2015)
  4. "Combining Dark Energy Survey Science Verification data with near-infrared data from the ESO VISTA Hemisphere Survey", Monthly Notices of the Royal Astronomical Society, Volume 446, Issue 3, p.2523-2539 (Jan 2015)
  5. "The Whole is Greater than the Sum of the Parts: Optimizing the Joint Science Return from LSST, Euclid and WFIRST", arXiv:1501.07897 (Jan 2015)
  6. "Dark Energy Survey Discovery of a Likely Tidal Disruption Event", The Astronomer's Telegram, #6877 (Jan 2015)
  7. "Spectroscopic Classifications with Magellan of 7 Supernovae Discovered by DES", The Astronomer's Telegram, #6891 (Jan 2015)
  8. "SOAR Classification of DES14C3rap as a Type Ia Supernova", The Astronomer's Telegram, #6938 (Jan 2015)
  9. "Spectroscopic Classifications of DES transients by OzDES", The Astronomer's Telegram, #6932 (Jan 2015)
  10. "DES13S2cmm: The First Superluminous Supernova from the Dark Energy Survey", arXiv:1501.07232 (Jan 2015)
  11. "Spectroscopic Classification of DES Supernovae Candidates with Magellan", The Astronomer's Telegram, #6790 (Dec 2014)
  12. "OzDES Spectroscopic Classification of Supernovae From DES", The Astronomer's Telegram, #6789 (Dec 2014)
  13. "Photometric redshift analysis in the Dark Energy Survey Science Verification data", Monthly Notices of the Royal Astronomical Society, Volume 445, Issue 2, p.1482-1506 (Dec 2014)
  14. "A warm Spitzer survey of the LSST/DES 'Deep drilling' fields", Spitzer Proposal ID #11086 (Dec 2014)
  15. "Spectroscopic Classification with MMT of Eight Type Ia Supernovae discovered by DES", The Astronomer's Telegram, #6672 (Nov 2014)
  16. "OzDES Spectroscopic Classification of 6 Supernovae From DES", The Astronomer's Telegram, #6679 (Nov 2014)
  17. "OzDES Spectroscopic Classification of 5 Supernovae From DES", The Astronomer's Telegram, #6520 (Oct 2014)
  18. "OzDES Spectroscopic Classification of DES14S2bnq", The Astronomer's Telegram, #6561 (Oct 2014)
  19. "Spectroscopic Classification of DES14C3cxt From Keck", The Astronomer's Telegram, #6559 (Oct 2014)
  20. "Spectroscopic Classification of DES14S2boa with GTC", The Astronomer's Telegram, #6549 (Oct 2014)

Latest Conference Proceedings
  1. "Properties of type Ia supernovae inside rich galaxy clusters", XIV Latin American Regional IAU Meeting (Eds. A. Mateus, J. Gregorio-Hetem & R. Cid Fernandes) Revista Mexicana de AstronomĂ­a y AstrofĂ­sica (Serie de Conferencias) Vol. 44, pp. 206-206 (2014) (Oct 2014)
  2. "The Dark Energy Survey and operations: Year 1", Proceedings of the SPIE, Volume 9149, id. 91490V 15 pp. (2014) (Aug 2014)
  3. "The Dark Energy Survey: Overview", American Astronomical Society, AAS Meeting #221, #335.01 (Jan 2013)
  4. "Correlations Between Type Ia Supernovae and Their Host Galaxies Using the SDSS and Multi-wavelength Photometry", American Astronomical Society, AAS Meeting #221, #106.06 (Jan 2013)
  5. "The Dark Energy Spectrometer: a potential multi-fiber instrument for the Blanco 4-meter Telescope", Ground-based and Airborne Instrumentation for Astronomy IV. Proceedings of the SPIE, Volume 8446, article id. 844656, 13 pp. (2012) (Sep 2012)
  6. "Dark Energy Spectrometer - A Proposed Multi-Fiber Instrument for the Blanco 4 Meter Telescope", American Astronomical Society, AAS Meeting #219, #422.09 (Jan 2012)
  7. "WFC3 and WFPC2 Follow Up of Strong Gravitational Lenses", American Astronomical Society, AAS Meeting #217, #347.03; Bulletin of the American Astronomical Society, Vol. 43, 2011 (Jan 2011)
  8. "SBAS: The Sloan Bright Arcs Survey", American Astronomical Society, AAS Meeting #217, #347.01; Bulletin of the American Astronomical Society, Vol. 43, 2011 (Jan 2011)
  9. "The Dark Energy Survey", American Astronomical Society, AAS Meeting #217, #205.01; Bulletin of the American Astronomical Society, Vol. 43, 2011 (Jan 2011)
  10. "Identifying Faint Supernovae in the SDSS-II SN Survey Data", American Astronomical Society, AAS Meeting #215, #430.21; Bulletin of the American Astronomical Society, Vol. 42, p.359 (Jan 2010)

Current & Future Visitors:
  1. Keith Bechtol, WIPAC / University of Wisconsin-Madison
Past Visitors:
  1. Steve Kahn, Stanford National Accelerator Laboratory (2014)
  2. Brian Nord, Fermilab (2014)
  3. Natalie Roe, LBNL (2014)
  4. Florian Beutler, University of Western Australia (2012)
  5. Felipe Marin, Swinburne University (2011)
  6. Roberto Trotta, Imperial College London (2011)
  7. Felipe Marin, Swinburne University (2010)
  8. Tamara Davis, University of Queensland (2009)
  9. Renee Hlozek, University of Oxford (2009)
  10. Alexandra Abate, University College London (2008)
  11. Manda Banerji, University College London (2008)
  12. Alison Coil, University of California, San Diego (2008)
  13. Tamara Davis, University of Queensland (2008)
  14. Eanna Flanagan, Cornell University (2008)
  15. Marcelo Gleiser, Dartmouth College (2008)
  16. Ofer Lahav, University College London (2008)
  17. Julie McEnery, NASA, Goddard Space Flight Center (2008)
  18. Jean Quashnock, Carthage College (2007)
  19. Mat Smith, University of Portsmouth (2007)
  20. Joseph Zuntz, Imperial College, London (2007)
  21. Anna Cabre Albos, Institut d'Estudis Espacials de Catalunya (2006)
  22. David Cinabro, Wayne State University (2006)
  23. Rogerio Rosenfeld, Instituto de Fisica Teorica-UNESP (2006)
  24. Masao Sako, University of Pennsylvania (2006)
  25. Brandon Allgood, University of California, Santa Cruz (2005)
  26. Lifan Wang, Lawrence Berkeley National Laboratory (2005)
  27. Alexander Conley, University of California, Berkeley (2004)
  28. Masao Sako, Stanford University (2004)
  29. Roman Scoccimarro, New York University (2004)
  30. Andreas Berlind, New York University (2003)
  31. Enrique Gaztanaga, Instituto Nacional de Astrofisica (2002)
  32. Timothy McKay, University of Michigan (2002)
  33. Erin Sheldon, University of Michigan (2002)