Joshua A. Frieman

Theoretical Astrophysics Group, Fermilab; Professor, Dept. of Astronomy & Astrophysics
Deputy Director of the KICP

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
  • Conferences, Workshops and Visitors committee (Chair)
  • Appointments committee
  • PFC Executive committee
  • Executive committee

 
KICP Publications
2018 | 2017 | 2016 | 2015 | 2014 | 2013 | 2012 | 2011 | 2010 | 2009 | 2008 | 2007 | 2006 | 2005 | 2004 | 2003 | 2002 | 2001


Latest Journal Publications
  1. "Galaxy bias from galaxy-galaxy lensing in the DES science verification data", Monthly Notices of the Royal Astronomical Society, Volume 473, Issue 2, p.1667-1684 (Jan 2018)
  2. "Models of the strongly lensed quasar DES J0408-5354", Monthly Notices of the Royal Astronomical Society, Volume 472, Issue 4, p.4038-4050 (Dec 2017)
  3. "OzDES multifibre spectroscopy for the Dark Energy Survey: 3-yr results and first data release", Monthly Notices of the Royal Astronomical Society, Volume 472, Issue 1, p.273-288 (Nov 2017)
  4. "A gravitational-wave standard siren measurement of the Hubble constant", Nature, Volume 551, Issue 7678, pp. 85-88 (2017) (Nov 2017)
  5. "Dark Energy Survey Year 1 Results: A Precise H0 Measurement from DES Y1, BAO, and D/H Data", arXiv:1711.00403 (Nov 2017)
  6. "Evidence for Dynamically Driven Formation of the GW170817 Neutron Star Binary in NGC 4993", The Astrophysical Journal Letters, Volume 849, Issue 2, article id. L34, 8 pp. (2017) (Nov 2017)
  7. "DES meets Gaia: discovery of strongly lensed quasars from a multiplet search", arXiv:1711.03971 (Nov 2017)
  8. "How Many Kilonovae Can Be Found in Past, Present, and Future Survey Datasets?", arXiv:1710.05845 (Oct 2017)
  9. "DES15E2mlf: a spectroscopically confirmed superluminous supernova that exploded 3.5 Gyr after the big bang", Monthly Notices of the Royal Astronomical Society, Volume 470, Issue 4, p.4241-4250 (Oct 2017)
  10. "Density split statistics: Cosmological constraints from counts and lensing in cells in DES Y1 and SDSS", arXiv:1710.05045 (Oct 2017)
  11. "Density split statistics: joint model of counts and lensing in cells", arXiv:1710.05162 (Oct 2017)
  12. "The Electromagnetic Counterpart of the Binary Neutron Star Merger LIGO/Virgo GW170817. II. UV, Optical, and Near-infrared Light Curves and Comparison to Kilonova Models", The Astrophysical Journal Letters, Volume 848, Issue 2, article id. L17, 10 pp. (2017) (Oct 2017)
  13. "Dark Energy Survey Year 1 Results: Cross-Correlation Redshifts in the DES -- Calibration of the Weak Lensing Source Redshift Distributions", arXiv:1710.02517 (Oct 2017)
  14. "The Electromagnetic Counterpart of the Binary Neutron Star Merger LIGO/Virgo GW170817. I. Discovery of the Optical Counterpart Using the Dark Energy Camera", The Astrophysical Journal Letters, Volume 848, Issue 2, article id. L16, 7 pp. (2017) (Oct 2017)
  15. "The Electromagnetic Counterpart of the Binary Neutron Star Merger LIGO/Virgo GW170817. VII. Properties of the Host Galaxy and Constraints on the Merger Timescale", The Astrophysical Journal Letters, Volume 848, Issue 2, article id. L22, 7 pp. (2017) (Oct 2017)
  16. "The Electromagnetic Counterpart of the Binary Neutron Star Merger LIGO/Virgo GW170817. VI. Radio Constraints on a Relativistic Jet and Predictions for Late-time Emission from the Kilonova Ejecta", The Astrophysical Journal Letters, Volume 848, Issue 2, article id. L21, 7 pp. (2017) (Oct 2017)
  17. "The Electromagnetic Counterpart of the Binary Neutron Star Merger LIGO/Virgo GW170817. IV. Detection of Near-infrared Signatures of r-process Nucleosynthesis with Gemini-South", The Astrophysical Journal Letters, Volume 848, Issue 2, article id. L19, 7 pp. (2017) (Oct 2017)
  18. "The Electromagnetic Counterpart of the Binary Neutron Star Merger LIGO/Virgo GW170817. V. Rising X-Ray Emission from an Off-axis Jet", The Astrophysical Journal Letters, Volume 848, Issue 2, article id. L20, 7 pp. (2017) (Oct 2017)
  19. "Improved constraints on H0 from a combined analysis of gravitational-wave and electromagnetic emission from GW170817", arXiv:1710.06426 (Oct 2017)
  20. "Evidence for Dynamically Driven Formation of the GW170817 Neutron Star Binary in NGC 4993", arXiv:1710.06748 (Oct 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)