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: ERC 453
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
Past Students

GRADUATE: Jennifer Helsby (2015), Alan Zablocki (2015), Felipe Marin (2010), Carlos E. Cunha (2008), Benjamin E. Dilday (2008), David Johnston (2003), Jonathan Mitchell (2003), Craig Wiegert (2003)

UNDERGRADUATE: Paul Williams (2015), Alex Lanzano (2013), Rebecca Pierce (2013)
 
Currently in Committees
  • Wednesday Colloquium committee
  • Appointments committee
  • PFC Executive committee
  • Executive committee

 
KICP Publications
2017 | 2016 | 2015 | 2014 | 2013 | 2012 | 2011 | 2010 | 2009 | 2008 | 2007 | 2006 | 2005 | 2004 | 2003 | 2002 | 2001


Latest Journal Publications
  1. "Photometric redshifts and clustering of emission line galaxies selected jointly by DES and eBOSS", Monthly Notices of the Royal Astronomical Society, Volume 469, Issue 3, p.2771-2790 (Aug 2017)
  2. "Optical–SZE scaling relations for DES optically selected clusters within the SPT-SZ Survey", Monthly Notices of the Royal Astronomical Society, Volume 468, Issue 3, p.3347-3360 (Jul 2017)
  3. "Eight new luminous z ≥ 6 quasars discovered via SED model fitting of VISTA, WISE and Dark Energy Survey Year 1 observations", Monthly Notices of the Royal Astronomical Society, Volume 468, Issue 4, p.4702-4718 (Jul 2017)
  4. "Astrometric Calibration and Performance of the Dark Energy Camera", Publications of the Astronomical Society of Pacific, Volume 129, Issue 977, pp. 074503 (2017) (Jul 2017)
  5. "Galaxy populations in massive galaxy clusters to z = 1.1: colour distribution, concentration, halo occupation number and red sequence fraction", Monthly Notices of the Royal Astronomical Society, Volume 467, Issue 4, p.4015-4035 (Jun 2017)
  6. "A Multi-component Matched Filter Cluster Confirmation Tool for eROSITA: Initial Application to the RASS and DES-SV Datasets", arXiv:1706.06577 (Jun 2017)
  7. "COSMOGRAIL XVI: Time delays for the quadruply imaged quasar DES J0408-5354 with high-cadence photometric monitoring", arXiv:1706.09424 (Jun 2017)
  8. "Dark Energy Survey Year 1 Results: Multi-Probe Methodology and Simulated Likelihood Analyses", arXiv:1706.09359 (Jun 2017)
  9. "Extreme variability quasars from the Sloan Digital Sky Survey and the Dark Energy Survey", arXiv:1706.07875 (Jun 2017)
  10. "Discovery and Physical Characterization of a Large Scattered Disk Object at 92 au", The Astrophysical Journal Letters, Volume 839, Issue 1, article id. L15, 7 pp. (2017) (Apr 2017)
  11. "Discovery of the Lensed Quasar System DES J0408-5354", The Astrophysical Journal Letters, Volume 838, Issue 2, article id. L15, 7 pp. (2017) (Apr 2017)
  12. "Environmental dependence of the galaxy stellar mass function in the Dark Energy Survey Science Verification Data", Monthly Notices of the Royal Astronomical Society, Volume 466, Issue 1, p.228-247 (Apr 2017)
  13. "Testing the lognormality of the galaxy and weak lensing convergence distributions from Dark Energy Survey maps", Monthly Notices of the Royal Astronomical Society, Volume 466, Issue 2, p.1444-1461 (Apr 2017)
  14. "Galaxy-galaxy lensing in the Dark Energy Survey Science Verification data", Monthly Notices of the Royal Astronomical Society, Volume 465, Issue 4, p.4204-4218 (Mar 2017)
  15. "Imprint of DES superstructures on the cosmic microwave background", Monthly Notices of the Royal Astronomical Society, Volume 465, Issue 4, p.4166-4179 (Mar 2017)
  16. "VDES J2325-5229 a z = 2.7 gravitationally lensed quasar discovered using morphology-independent supervised machine learning", Monthly Notices of the Royal Astronomical Society, Volume 465, Issue 4, p.4325-4334 (Mar 2017)
  17. "Imprint of DES superstructures on the cosmic microwave background", Monthly Notices of the Royal Astronomical Society, Volume 465, Issue 4, p.4166-4179 (Mar 2017)
  18. "Nearest Neighbor: The Low-mass Milky Way Satellite Tucana III", The Astrophysical Journal, Volume 838, Issue 1, article id. 11, 14 pp. (2017) (Mar 2017)
  19. "Farthest Neighbor: The Distant Milky Way Satellite Eridanus II", The Astrophysical Journal, Volume 838, Issue 1, article id. 8, 15 pp. (2017) (Mar 2017)
  20. "A Study of Quasar Selection in the Supernova Fields of the Dark Energy Survey", The Astronomical Journal, Volume 153, Issue 3, article id. 107, 15 pp. (2017) (Mar 2017)

Latest Conference Proceedings
  1. "The dark energy survey and operations: years 1 to 3", Proceedings of the SPIE, Volume 9910, id. 99101D 19 pp. (2016) (Jul 2016)
  2. "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 Astronomía y Astrofísica (Serie de Conferencias) Vol. 44, pp. 206-206 (2014) (Oct 2014)
  3. "The Dark Energy Survey and operations: Year 1", Proceedings of the SPIE, Volume 9149, id. 91490V 15 pp. (2014) (Aug 2014)
  4. "The Dark Energy Survey: Overview", American Astronomical Society, AAS Meeting #221, id.#335.01 (Jan 2013)
  5. "Correlations Between Type Ia Supernovae and Their Host Galaxies Using the SDSS and Multi-wavelength Photometry", American Astronomical Society, AAS Meeting #221, id.#106.06 (Jan 2013)
  6. "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)
  7. "Dark Energy Spectrometer - A Proposed Multi-Fiber Instrument for the Blanco 4 Meter Telescope", American Astronomical Society, AAS Meeting #219, #422.09 (Jan 2012)
  8. "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)
  9. "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)
  10. "The Dark Energy Survey", American Astronomical Society, AAS Meeting #217, #205.01; Bulletin of the American Astronomical Society, Vol. 43, 2011 (Jan 2011)

 
Visitors
Past Visitors:
  1. Aurélien Benoit-Lévy, University College London / Institut d'Astrophysique de Paris (2016)
  2. Marcelle Soares-Santos, Fermilab (2016)
  3. Keith Bechtol, WIPAC / University of Wisconsin-Madison (2015)
  4. Chihway Chang, ETH Zurich (2015)
  5. Steve Kahn, Stanford National Accelerator Laboratory (2014)
  6. Brian Nord, Fermilab (2014)
  7. Natalie Roe, LBNL (2014)
  8. Florian Beutler, University of Western Australia (2012)
  9. Felipe Marin, Swinburne University (2011)
  10. Roberto Trotta, Imperial College London (2011)
  11. Felipe Marin, Swinburne University (2010)
  12. Tamara Davis, University of Queensland (2009)
  13. Renee Hlozek, University of Oxford (2009)
  14. Alexandra Abate, University College London (2008)
  15. Manda Banerji, University College London (2008)
  16. Alison Coil, University of California, San Diego (2008)
  17. Tamara Davis, University of Queensland (2008)
  18. Eanna Flanagan, Cornell University (2008)
  19. Marcelo Gleiser, Dartmouth College (2008)
  20. Ofer Lahav, University College London (2008)
  21. Julie McEnery, NASA, Goddard Space Flight Center (2008)
  22. Jean Quashnock, Carthage College (2007)
  23. Mat Smith, University of Portsmouth (2007)
  24. Joseph Zuntz, Imperial College, London (2007)
  25. Anna Cabre Albos, Institut d'Estudis Espacials de Catalunya (2006)
  26. David Cinabro, Wayne State University (2006)
  27. Rogerio Rosenfeld, Instituto de Fisica Teorica-UNESP (2006)
  28. Masao Sako, University of Pennsylvania (2006)
  29. Brandon Allgood, University of California, Santa Cruz (2005)
  30. Lifan Wang, Lawrence Berkeley National Laboratory (2005)
  31. Alexander Conley, University of California, Berkeley (2004)
  32. Masao Sako, Stanford University (2004)
  33. Roman Scoccimarro, New York University (2004)
  34. Andreas Berlind, New York University (2003)
  35. Enrique Gaztanaga, Instituto Nacional de Astrofisica (2002)
  36. Timothy McKay, University of Michigan (2002)
  37. Erin Sheldon, University of Michigan (2002)