Joshua A. Frieman

Theoretical Astrophysics Group, Fermilab; Professor, Dept. of Astronomy & Astrophysics

Ph.D., Physics, University of Chicago, 1985
 
Contact Information
Phone: (773)702-7971
Location: TAAC 24
Email: friemanfnal.gov
WWW: Web Site
 
Research
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: Sloan Digital Sky Survey (SDSS) | SDSS Supernova Survey (SDSS SS)
 
KICP Highlights & News

 
Talks, Lectures, & Workshops

 
Students
GRADUATE STUDENTS
UNDERGRADUATE STUDENTS
Past Students

GRADUATE: Alan Zablocki (2015), 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
  • Fellowship 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. "Optimizing spectroscopic and photometric galaxy surveys: same-sky benefits for dark energy and modified gravity", Monthly Notices of the Royal Astronomical Society, Volume 451, Issue 4, p.4424-4444 (Aug 2015)
  2. "No galaxy left behind: accurate measurements with the faintest objects in the Dark Energy Survey", arXiv:1507.08336 (Jul 2015)
  3. "Eight New Milky Way Companions Discovered in First-year Dark Energy Survey Data", The Astrophysical Journal, Volume 807, Issue 1, article id. 50, 16 pp. (2015) (Jul 2015)
  4. "The DES Science Verification Weak Lensing Shear Catalogs", arXiv:1507.05603 (Jul 2015)
  5. "Cosmic Shear Measurements with DES Science Verification Data", arXiv:1507.05598 (Jul 2015)
  6. "Cosmology from Cosmic Shear with DES Science Verification Data", arXiv:1507.05552 (Jul 2015)
  7. "CMB lensing tomography with the DES Science Verification galaxies", arXiv:1507.05551 (Jul 2015)
  8. "redMaGiC: Selecting Luminous Red Galaxies from the DES Science Verification Data", arXiv:1507.05460 (Jul 2015)
  9. "Galaxy clustering, photometric redshifts and diagnosis of systematics in the DES Science Verification data", arXiv:1507.05360 (Jul 2015)
  10. "Observation of Two New L4 Neptune Trojans in the Dark Energy Survey Supernova Fields", arXiv:1507.05177 (Jul 2015)
  11. "The Difference Imaging Pipeline for the Transient Search in the Dark Energy Survey", arXiv:1507.05137 (Jul 2015)
  12. "Weak lensing by galaxy troughs in DES Science Verification data", arXiv:1507.05090 (Jul 2015)
  13. "Redshift distributions of galaxies in the DES Science Verification shear catalogue and implications for weak lensing", arXiv:1507.05909 (Jul 2015)
  14. "Mapping and simulating systematics due to spatially-varying observing conditions in DES Science Verification data", arXiv:1507.05647 (Jul 2015)
  15. "Star/galaxy separation at faint magnitudes: application to a simulated Dark Energy Survey", Monthly Notices of the Royal Astronomical Society, Volume 450, Issue 1, p.666-680 (Jun 2015)
  16. "Constraints on the Richness-Mass Relation and the Optical-SZE Positional Offset Distribution for SZE-Selected Clusters", arXiv:1506.07814 (Jun 2015)
  17. "The LMC geometry and outer stellar populations from early DES data", Monthly Notices of the Royal Astronomical Society, Volume 449, Issue 1, p.1129-1145 (May 2015)
  18. "Mass and galaxy distributions of four massive galaxy clusters from Dark Energy Survey Science Verification data", Monthly Notices of the Royal Astronomical Society, Volume 449, Issue 3, p.2219-2238 (May 2015)
  19. "DES13S2cmm: the first superluminous supernova from the Dark Energy Survey", Monthly Notices of the Royal Astronomical Society, Volume 449, Issue 2, p.1215-1227 (May 2015)
  20. "Wide-Field Lensing Mass Maps from DES Science Verification Data", arXiv:1505.01871 (May 2015)

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)

 
Visitors
Current & Future Visitors:
  1. Chihway Chang, ETH Zurich
Past Visitors:
  1. Keith Bechtol, WIPAC / University of Wisconsin-Madison (2015)
  2. Steve Kahn, Stanford National Accelerator Laboratory (2014)
  3. Brian Nord, Fermilab (2014)
  4. Natalie Roe, LBNL (2014)
  5. Florian Beutler, University of Western Australia (2012)
  6. Felipe Marin, Swinburne University (2011)
  7. Roberto Trotta, Imperial College London (2011)
  8. Felipe Marin, Swinburne University (2010)
  9. Tamara Davis, University of Queensland (2009)
  10. Renee Hlozek, University of Oxford (2009)
  11. Alexandra Abate, University College London (2008)
  12. Manda Banerji, University College London (2008)
  13. Alison Coil, University of California, San Diego (2008)
  14. Tamara Davis, University of Queensland (2008)
  15. Eanna Flanagan, Cornell University (2008)
  16. Marcelo Gleiser, Dartmouth College (2008)
  17. Ofer Lahav, University College London (2008)
  18. Julie McEnery, NASA, Goddard Space Flight Center (2008)
  19. Jean Quashnock, Carthage College (2007)
  20. Mat Smith, University of Portsmouth (2007)
  21. Joseph Zuntz, Imperial College, London (2007)
  22. Anna Cabre Albos, Institut d'Estudis Espacials de Catalunya (2006)
  23. David Cinabro, Wayne State University (2006)
  24. Rogerio Rosenfeld, Instituto de Fisica Teorica-UNESP (2006)
  25. Masao Sako, University of Pennsylvania (2006)
  26. Brandon Allgood, University of California, Santa Cruz (2005)
  27. Lifan Wang, Lawrence Berkeley National Laboratory (2005)
  28. Alexander Conley, University of California, Berkeley (2004)
  29. Masao Sako, Stanford University (2004)
  30. Roman Scoccimarro, New York University (2004)
  31. Andreas Berlind, New York University (2003)
  32. Enrique Gaztanaga, Instituto Nacional de Astrofisica (2002)
  33. Timothy McKay, University of Michigan (2002)
  34. Erin Sheldon, University of Michigan (2002)