Yannick Mellier

from Wikipedia, the free encyclopedia

Yannick Mellier (born September 16, 1958 ) is a French astrophysicist. He is known for discovering the gravitational lensing effect of galaxy clusters in 1987 and further research on the gravitational lensing effect.

Life

Mellier received his doctorate in 1987 from the Paul Sabatier University in Toulouse . Since 1996 he has been at the Institute for Astrophysics (IAP) in Paris, where he leads the gravitational lens team.

In 1987, together with Genevieve Soucail and others at the Toulouse observatory, he published the first clear indication of a galaxy behind the cluster Abell 370 that was arcuately distorted by the gravitational lensing effect . Somewhat earlier (1986) Roger Lynds (NOAO) and Vahe Petrosian (Stanford University) published observations of large arched structures without identifying them as gravitational lenses.

From 1996 he headed a research group that used new techniques to map the distribution of dark matter in the cosmos with the help of gravitational lenses and presented the first map in 2000 ( Canada-France-Hawaii Telescope , CFHT). He then carried out similar investigations with improved methods (Descart project, CFHTLS project). For this purpose, a wide-field CCD camera (Megacam) was developed in France and the data is processed in the Terapix data center at the IAP.

Since 2011 he has headed the scientific consortium for the development of the Euclid space telescope .

Awards

Fonts

  • Yannick Mellier, Bernard Fort, Genevieve Soucail (editors) Gravitational Lensing , Lecture Notes in Physics 360, Springer Verlag 1990 (Proc. Workshop Toulouse 13-15 September 1989)
  • Editor Impact of gravitational lensing on cosmology , IAU Symposium at EPFL Lausanne July 2004, Cambridge University Press 2005

Web links

Individual evidence

  1. ↑ Soucail, Fort, Mellier, Picat A blue ring-like structure, in the center of the A 370 cluster of galaxies , Astronomy and Astrophysics , Volume 172, 1987, pp. L14-16, bibcode : 1987A & A ... 172L .. 14S .
    Soucail, Fort, Mellier, Mathez, Hammer Further Data on the blue ring structure in A 370 , Astronomy and Astrophysics, Volume 184, 1987, L7-L9, bibcode : 1987A & A ... 184L ... 7S
  2. ↑ Soucail, Fort, Mellier, Cailloux The giant arc in A 370: spectroscopic evidence for gravitational lensing from a source at z = 0, 724 , Astronomy and Astrophysics, Volume 191, 1988, L 19-21, bibcode : 1988A & A ... 191L..19S
  3. ^ Lynds, Petrosian, "Giant Luminous Arcs in Galaxy Clusters". Bulletin of the American Astronomical Society, Volume 18, 1986, p. 1014
  4. ↑ Van Warbeke, Mellier et al. a. Detection of correlated galaxy ellipticities from CFHT data: first evidence for gravitational lensing by large-scale structures , Astronomy and Astrophysics, Volume 358, 2000, pp. 30-44, bibcode : 2000A & A ... 358 ... 30V
  5. ↑ Descart
  6. ↑ CFHTLS
personal data
SURNAME Mellier, Yannick
BRIEF DESCRIPTION French astrophysicist
DATE OF BIRTH September 16, 1958