Jenny Sorce (AIP)

Cosmic Flows observations give us CLUES to the formation of the Local Universe
When Mar 06, 2015 from 10:30 AM to 12:00 PM
What
  • Colloquium
Where SH Lecture Hall
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Our Local Universe, the best-observed volume of the Universe, provides an excellent sample with which we can test gravitational theories and attempt to understand the formation and evolution of our neighborhood. Using recently released data - positions and peculiar velocities of more than 8,000 galaxies from the second catalog of the Cosmicflows project - and a newly developed technique - the reverse Zeldovich approximation and a bias correction, we produce simulations which resemble the Local Universe. The resulting Constrained Local UniversE Simulations reproduce the Large-Scale Structure down to a few megaparsecs (typically 3-4 h-1 Mpc). Local observations and constrained simulations can therefore be efficiently compared.