Margaret Geller

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Margaret Geller (1981)

Margaret Joan Geller (born December 8, 1947 in Ithaca , New York , USA ) is an American astrophysicist .

Life

Margaret Geller was born the daughter of the crystallographer Seymour Geller and his wife Sarah Levine Geller. As a child she was very interested in mathematics. In 1970 she earned a bachelor's degree from the University of California, Berkeley . At first she wanted to specialize in solid-state physics , but Charles Kittel advised her against it. She should rather choose something that would be fashionable ten years from now if she is a fully trained scientist, such as astrophysics or biophysics . She chose the former, earning a Masters Degree in 1972 and her PhD from Princeton University in the field three years later . From 1974 to 1976 she was a post-doctoral student at the Harvard-Smithsonian Center for Astrophysics , then a fellow at the Harvard College Observatory and 1980 to 1983 assistant professor at Harvard University . She has worked at the Smithsonian Astrophysical Observatory since 1983 and has also been an astronomy professor at Harvard University since 1988.

Geller mapped the universe and refuted the hypothesis that galaxies are evenly distributed on large scales. To do this, she and her colleagues measured the redshift of 584 galaxies for the first time. The galaxies are by no means randomly distributed on the map they have produced, but are arranged as if in a foam-like structure. The “stick figure” in this diagram also became famous. In 1989, Geller and John Huchra discovered the Great Wall , which was the largest structure in the universe until then. She is also interested in the distribution of dark matter in the cosmos and the mass in the halo of our Milky Way , in galaxy clusters and in star formation .

Geller's hobbies are filming, reading, talking, writing, traveling and gardening.

Publications (selection)

  • Bright Galaxies in Rich Clusters: A Statistical Model for Magnitude Distributions . Dissertation, 1975
  • more than 200 scientific papers
  • Films (all in collaboration with Boyd Estus ):
    • 1989 Mapping The Universe (5 minutes)
    • 1989 Where The Galaxies Are (8 minutes)
    • 1993 So Many Galaxies ... So Little Time (40 minutes)
    • 1996 Fred and Ginger on the Universe (short film)

Awards (selection)

Memberships

literature

Web links

Individual evidence

  1. Valérie de Lapparent, Margaret J. Geller, John P. Huchra: A Slice of the universe . In: Astrophysical Journal . 1986, vol. 302, pp. L1-L5.
  2. Margaret J. Geller, John P. Huchra: Mapping the universe. In: Science . 1989, Volume 246, pp. 897-903.
  3. ^ The Magellanic Premium of the American Philosophical Society , website of the APS . Retrieved October 29, 2019.