Astronomy
The Department of Astronomy, also called the Geneva Observatory, with its 110 members of staff, is located on two sites: Sauverny, location of the main buildings, and Ecogia, home of the INTEGRAL Science Data Center since 1996. The fifteen colleagues from the Astrophysics Laboratory of the EPFL also work out of Sauverny.
Together, they constitute the largest center for research and education in astrophysics in Switzerland. The activities of the research teams provide a balanced view of current knowledge in astronomy, because they address important themes related to planets, stars, galaxies, and the universe. Furthermore, research in astrophysics requires constant interaction between theoretical research (predictions and modeling) and observations for which the whole of the electromagnetic spectrum must be used (telescopes on the ground and in space). Computerized modeling and technological developments therefore play a key role in the accurate and effective advancement of astrophysics research.

The Department of Astronomy actively participates in space missions such as INTEGRAL (gamma rays), COROT (seismology and planet transits), and GAIA (astrometry and photometry), and contributes to the development of instruments for giant telescopes on the ground. In cooperation with the belgian university of Leuven, it constructed two telescopes, installed in Chile in 1998 and in the Canary Islands in 2001, which are equipped with “home-made” instruments, spectrographs, photometers or CCD cameras.
Some highlights of the Department from the Internet site
- Stellar seismology on α Centauri. Oscillations on the surface of stars make it possible to probe their internal structure.
- The torsion of galaxies: mystery solved. The solution to this 50-year-old problem also puts new limits on the distribution of dark matter in galaxies.
- The lightest exoplanet. A planet of 14 times the mass of Earth has been detected orbiting the star μ Arae
- IGR J00291 + 5934: the fastest-known X-ray pulsar. On this pulsar, a day lasts 1.67 milliseconds and a year, 2 hours 27 minutes…


