Prof. Dr. Alexandre Refregier
Prof. Dr. Alexandre Refregier
Full Professor at the Department of Physics
ETH Zürich
- Work phone +41 44 632 36 32
- Work phone +41 44 633 27 70 Alternate(Alt.)
- phone +41 44 633 27 70 Secretariat(Sec.)
- emailalexandre.refregier@phys.ethz.ch
- web_assetcosmology.ethz.ch/
- contactsV-Card (vcf, 1kb)
Additional information
Research area
Recent observations have established that the energy density of the universe at our epoch is dominated by two mysterious components. First, 76% of its energy density is in the form of Dark Energy, which is causing the Universe expansion to accelerate. Another 20% of the energy in the universe is in the form of dark matter, which exerts a gravitational attraction as normal matter, but does not emit light. One possibility to explain one or both of these puzzles is that Einstein's General Relativity, and thus our understanding of gravity, needs to be revised on cosmological scales. Together, dark energy and dark matter pose some of the most important questions in fundamental physics today. My research interests focus on the understanding of these fundamental questions in Cosmology from measurements of the large-scale structure of the universe. For this purpose, I use astrophysical observations in different wavelengths ranging from X-rays to the radio band and combine the observational, theoretical and instrumental approaches.
Astrophysics and Cosmology: Dark energy, Dark matter, Weak Gravitational lensing, Baryon Accoustic Oscillations, Cosmic Microwave Background, Galaxy Clusters
Methods: theoretical modelling, space mission development (Principal Investigator level, science and instrumentation), observations, data analysis methods
Publications
2011 – pressent: Professor, ETH Zürich, Switzerland 2011 – present
2002 – 2011: Astrophysicist CEA Saclay, France
1999 - 2002: Research Associate, University of Cambridge, Cambridge, UK
1997 – 1999: Research Associate, Princeton University, Priceton, NJ, USA
1993 – 1997: PhD in Physics, Columbia University, New York, NY, USA
Thesis: Discrete Source Backgrounds in Cosmology
Thesis Advisor: Prof. David J. Helfand
Thesis co-Advisor: Prof. Abraham Loeb (Harvard)
1992 – 1993: M.Phil. in Physics, Columbia University, New York, NY, USA
1991 – 1992: M.A. in Physics, Columbia University, New York, NY, USA
1987 – 1991: B.S. in Physics (Honors degree, Summa cum Laude) University of Texas at Austin, Austin, TX, USA
Course Catalogue
Autumn Semester 2024
Number | Unit |
---|---|
402-0101-00L | The Zurich Physics Colloquium |
402-0263-00L | Astrophysics I |
402-0263-10L | Astrophysics I |
402-0300-00L | IPA Colloquium |
402-0371-62L | Cosmological Probes |