Joshua A. Frieman

Professor, Department of Astronomy and Astrophysics, and the College; Fermilab: Theoretical Astrophysics Group; Kavli Institute for Cosmological Physics

Education: BS 1981 (Physics) Stanford University; PhD 1985 (Physics)

Contact Information

Phone: (630) 840-2226
Location: Fermilab; AAC 032
Email: friemanfnal.gov
WWW: Web Site

Research

Cosmology, large-scale structure, dark energy

Frieman's primary research is in theoretical and observational cosmology, especially dark energy, large-scale structure,
and the interplay between cosmology, particle physics, and astrophysics. Current and recent research projects include:
the analysis of the SDSS-II Supernova Survey, which discovered 500 spectroscopically confirmed type Ia supernovae,
with the aim of improving constraints on dark energy and the understanding of SNe Ia as cosmological distance indicators;
analysis and modeling of large-scale structure in galaxy surveys such as the Sloan Digital Sky Survey; the use of weak
gravitational lensing observations to probe the distribution of mass on galaxy and cluster scales; and development of the
Dark Energy Survey, which will use a new imager on the Blanco 4-meter telescope at CTIO to carry out a wide-area survey to
probe cosmic acceleration. Frieman is a member of the Theoretical Astrophysics group at Fermilab, which has close
connections with the cosmologists and theoretical astrophysicists at Chicago.

Research Fields: Cosmology

Scientific Projects: Dark Energy Survey; Sloan Digital Sky Survey

Visit: Fermilab: Theoretical Astrophysics Group; Kavli Institute for Cosmological Physics

Current Students

Graduate: Marcos Lima; Felipe Marin

Past Students

Graduate: Carlos E. Cunha (2008); Benjamin Dilday (2008)

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